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TI-2026-24138 Aliases CVE-2026-31581GHSA-8wc2-723q-hf3g

ALSA: 6fire: fix use-after-free on disconnect

Priority LOW 33CWE-416Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 38 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.

Summary

In the Linux kernel, the following vulnerability has been resolved: ALSA: 6fire: fix use-after-free on disconnect In usb6fire_chip_abort(), the chip struct is allocated as the card's private data (via snd_card_new with sizeof(struct sfire_chip)). When snd_card_free_when_closed() is called and no file handles are open, the card and embedded chip are freed synchronously. The subsequent chip->card = NULL write then hits freed slab memory. Call trace: usb6fire_chip_abort sound/usb/6fire/chip.c:59 [inline] usb6fire_chip_disconnect+0x348/0x358 sound/usb/6fire/chip.c:182 usb_unbind_interface+0x1a8/0x88c drivers/usb/core/driver.c:458 ... hub_event+0x1a04/0x4518 drivers/usb/core/hub.c:5953 Fix by moving the card lifecycle out of usb6fire_chip_abort() and into usb6fire_chip_disconnect(). The card pointer is saved in a local before any teardown, snd_card_disconnect() is called first to prevent new opens, URBs are aborted while chip is still valid, and snd_card_free_when_closed() is called last so chip is never accessed after the card may be freed.

Why it matters now

EPSS 0.00128 2nd percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10.258, 5.15.209, 6.1.175 +9Red Hat: 12 advisoriesRed Hat: 38 fixed, 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux5.10.231 to before 5.10.258; 5.15.174 to before 5.15.209; 6.1.120 to before 6.1.175; 6.6.64 to before 6.6.136; 6.12.2 to before 6.12.83; 4.19.325 to before 4.20; 5.4.287 to before 5.5; 6.11.11 to before 6.125.10.258, 5.15.209, 6.1.175, 6.6.136, 6.12.83, 4.20, 5.5, 6.12Patch availableCNA
LinuxLinux6.13 and later5.10.258, 5.15.209, 6.1.175, 6.6.136, 6.12.83, 6.18.24, 6.19.14, 7.0.1, 7.1Patch availableCNA
  • Linux VendorLinux Affected 5.10.231 to before 5.10.258; 5.15.174 to before 5.15.209; 6.1.120 to before 6.1.175; 6.6.64 to before 6.6.136; 6.12.2 to before 6.12.83; 4.19.325 to before 4.20; 5.4.287 to before 5.5; 6.11.11 to before 6.12 Fixed in 5.10.258, 5.15.209, 6.1.175, 6.6.136, 6.12.83, 4.20, 5.5, 6.12 Patch available CNA
  • Linux VendorLinux Affected 6.13 and later Fixed in 5.10.258, 5.15.209, 6.1.175, 6.6.136, 6.12.83, 6.18.24, 6.19.14, 7.0.1, 7.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*before 6.6.136; 6.12 to before 6.12.83; 6.13 to before 6.18.24; 6.19 to before 6.19.14; 7.0 to before 7.0.1VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 6.6.136; 6.12 to before 6.12.83; 6.13 to before 6.18.24; 6.19 to before 6.19.14; 7.0 to before 7.0.1 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.10.258, 5.15.209, 6.1.175, 6.6.136, 6.12.83, 4.20, 5.5, 6.12
  • Fix · CNA Linux (Linux) Fixed in 5.10.258, 5.15.209, 6.1.175, 6.6.136, 6.12.83, 6.18.24, 6.19.14, 7.0.1, 7.1

Red Hat 12 advisories

  • RHSA-2026:92997 Released 2026-10-30 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS E4S (v.8.8) bpftool-4.18.0-477.177.1.el8_8, kernel-4.18.0-477.177.1.el8_8, kernel-abi-stablelists-4.18.0-477.177.1.el8_8 +14
    • Red Hat Enterprise Linux BaseOS TUS (v.8.8) bpftool-4.18.0-477.177.1.el8_8, kernel-4.18.0-477.177.1.el8_8, kernel-abi-stablelists-4.18.0-477.177.1.el8_8 +14
  • RHSA-2026:91492 Released 2026-10-28 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) kernel-tools-libs-devel-5.14.0-570.152.1.el9_6, libperf-5.14.0-570.152.1.el9_6
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) kernel-64k-debug-devel-5.14.0-570.152.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.152.1.el9_6, kernel-64k-devel-5.14.0-570.152.1.el9_6 +12
    • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel-5.14.0-570.152.1.el9_6, kernel-64k-5.14.0-570.152.1.el9_6, kernel-64k-core-5.14.0-570.152.1.el9_6 +28
    • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt-5.14.0-570.152.1.el9_6, kernel-rt-64k-5.14.0-570.152.1.el9_6, kernel-rt-64k-core-5.14.0-570.152.1.el9_6 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt-5.14.0-570.152.1.el9_6, kernel-rt-core-5.14.0-570.152.1.el9_6, kernel-rt-debug-5.14.0-570.152.1.el9_6 +11
  • RHSA-2026:85000 Released 2026-10-19 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.223.1.el8_6, kernel-4.18.0-372.223.1.el8_6, kernel-abi-stablelists-4.18.0-372.223.1.el8_6 +14
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) bpftool-4.18.0-372.223.1.el8_6, kernel-4.18.0-372.223.1.el8_6, kernel-abi-stablelists-4.18.0-372.223.1.el8_6 +14
Show 9 more Red Hat advisories
  • RHSA-2026:77215 Released 2026-10-07 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) kernel-64k-debug-devel-5.14.0-284.195.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.195.1.el9_2, kernel-64k-devel-5.14.0-284.195.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool-7.0.0-284.195.1.el9_2, kernel-5.14.0-284.195.1.el9_2, kernel-64k-5.14.0-284.195.1.el9_2 +29
  • RHSA-2026:77217 Released 2026-10-07 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.4) bpftool-4.18.0-305.211.1.el8_4, kernel-4.18.0-305.211.1.el8_4, kernel-abi-stablelists-4.18.0-305.211.1.el8_4 +14
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) bpftool-4.18.0-305.211.1.el8_4, kernel-4.18.0-305.211.1.el8_4, kernel-abi-stablelists-4.18.0-305.211.1.el8_4 +19
  • RHSA-2026:77214 Released 2026-10-07 · Red Hat rating Important
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt-5.14.0-284.195.1.rt14.480.el9_2, kernel-rt-core-5.14.0-284.195.1.rt14.480.el9_2, kernel-rt-debug-5.14.0-284.195.1.rt14.480.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt-5.14.0-284.195.1.rt14.480.el9_2, kernel-rt-core-5.14.0-284.195.1.rt14.480.el9_2, kernel-rt-debug-5.14.0-284.195.1.rt14.480.el9_2 +11
  • RHSA-2026:75560 Released 2026-10-05 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) kernel-64k-debug-devel-6.12.0-55.108.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.108.1.el10_0, kernel-64k-devel-6.12.0-55.108.1.el10_0 +12
    • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel-6.12.0-55.108.1.el10_0, kernel-64k-6.12.0-55.108.1.el10_0, kernel-64k-core-6.12.0-55.108.1.el10_0 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) kernel-tools-libs-devel-6.12.0-55.108.1.el10_0, libperf-6.12.0-55.108.1.el10_0
    • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt-6.12.0-55.108.1.el10_0, kernel-rt-64k-6.12.0-55.108.1.el10_0, kernel-rt-64k-core-6.12.0-55.108.1.el10_0 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt-6.12.0-55.108.1.el10_0, kernel-rt-core-6.12.0-55.108.1.el10_0, kernel-rt-debug-6.12.0-55.108.1.el10_0 +11
  • RHSA-2026:73645 Released 2026-09-30 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream E4S (v.9.4) kernel-64k-debug-devel-5.14.0-427.153.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.153.1.el9_4, kernel-64k-devel-5.14.0-427.153.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS E4S (v.9.4) bpftool-7.3.0-427.153.1.el9_4, kernel-5.14.0-427.153.1.el9_4, kernel-64k-5.14.0-427.153.1.el9_4 +29
    • Red Hat Enterprise Linux Real Time E4S (v.9.4) kernel-rt-5.14.0-427.153.1.el9_4, kernel-rt-core-5.14.0-427.153.1.el9_4, kernel-rt-debug-5.14.0-427.153.1.el9_4 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4) kernel-rt-5.14.0-427.153.1.el9_4, kernel-rt-core-5.14.0-427.153.1.el9_4, kernel-rt-debug-5.14.0-427.153.1.el9_4 +11
  • RHSA-2026:25217 Released 2026-06-11 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-687.15.1.el9_8, kernel-64k-debug-devel-matched-5.14.0-687.15.1.el9_8, kernel-64k-devel-5.14.0-687.15.1.el9_8 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-687.15.1.el9_8, kernel-64k-5.14.0-687.15.1.el9_8, kernel-64k-core-5.14.0-687.15.1.el9_8 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-687.15.1.el9_8, libperf-5.14.0-687.15.1.el9_8
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-687.15.1.el9_8, kernel-rt-64k-5.14.0-687.15.1.el9_8, kernel-rt-64k-core-5.14.0-687.15.1.el9_8 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-687.15.1.el9_8, kernel-rt-core-5.14.0-687.15.1.el9_8, kernel-rt-debug-5.14.0-687.15.1.el9_8 +9
  • RHSA-2026:25191 Released 2026-06-11 · Red Hat rating Critical
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-211.22.1.el10_2, kernel-64k-debug-devel-matched-6.12.0-211.22.1.el10_2, kernel-64k-devel-6.12.0-211.22.1.el10_2 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-211.22.1.el10_2, kernel-64k-6.12.0-211.22.1.el10_2, kernel-64k-core-6.12.0-211.22.1.el10_2 +29
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-211.22.1.el10_2, libperf-6.12.0-211.22.1.el10_2
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-211.22.1.el10_2, kernel-rt-64k-6.12.0-211.22.1.el10_2, kernel-rt-64k-core-6.12.0-211.22.1.el10_2 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-211.22.1.el10_2, kernel-rt-core-6.12.0-211.22.1.el10_2, kernel-rt-debug-6.12.0-211.22.1.el10_2 +9
  • RHSA-2026:25121 Released 2026-06-10 · Red Hat rating Critical
    kernel security update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.132.1.el8_10, kernel-4.18.0-553.132.1.el8_10, kernel-abi-stablelists-4.18.0-553.132.1.el8_10 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.132.1.el8_10
  • RHSA-2026:25120 Released 2026-06-10 · Red Hat rating Critical
    kernel-rt security update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.132.1.rt7.473.el8_10, kernel-rt-core-4.18.0-553.132.1.rt7.473.el8_10, kernel-rt-debug-4.18.0-553.132.1.rt7.473.el8_10 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.132.1.rt7.473.el8_10, kernel-rt-core-4.18.0-553.132.1.rt7.473.el8_10, kernel-rt-debug-4.18.0-553.132.1.rt7.473.el8_10 +7

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat CodeReady Linux Builder EUS (v.9.6)Fixed RHSA-2026:91492
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:25191
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:25217
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:77215
Red Hat Enterprise Linux AppStream E4S (v.9.4)Fixed RHSA-2026:73645
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:75560
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:91492
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2026:25191
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2026:25121
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2026:25217
Red Hat Enterprise Linux BaseOS AUS (v.8.4)Fixed RHSA-2026:77217
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2026:85000
Red Hat Enterprise Linux BaseOS E4S (v.8.8)Fixed RHSA-2026:92997
Red Hat Enterprise Linux BaseOS E4S (v.9.2)Fixed RHSA-2026:77215
Red Hat Enterprise Linux BaseOS E4S (v.9.4)Fixed RHSA-2026:73645
Red Hat Enterprise Linux BaseOS EUS (v. 10.0)Fixed RHSA-2026:75560
Red Hat Enterprise Linux BaseOS EUS (v.9.6)Fixed RHSA-2026:91492
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)Fixed RHSA-2026:77217
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)Fixed RHSA-2026:85000
Red Hat Enterprise Linux BaseOS TUS (v.8.8)Fixed RHSA-2026:92997
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2026:25121
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:25191
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:25217
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:75560
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2026:25120
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2026:25120
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2026:25191
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2026:25217
Red Hat Enterprise Linux Real Time E4S (v.9.2)Fixed RHSA-2026:77214
Red Hat Enterprise Linux Real Time E4S (v.9.4)Fixed RHSA-2026:73645
Red Hat Enterprise Linux Real Time EUS (v. 10.0)Fixed RHSA-2026:75560
Red Hat Enterprise Linux Real Time EUS (v.9.6)Fixed RHSA-2026:91492
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2026:25191
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2026:25217
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)Fixed RHSA-2026:77214
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4)Fixed RHSA-2026:73645
Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)Fixed RHSA-2026:75560
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)Fixed RHSA-2026:91492
Not affected: 1 product
  • Red Hat Enterprise Linux 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-31581
  2. 2026-10-03 Alias added: GHSA-8wc2-723q-hf3g
  3. 2026-10-05 Fix available: RHSA-2026:75560 · Red Hat
  4. 2026-10-05 Fix available: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux BaseOS EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) +2 · Red Hat
  5. 2026-10-07 Fix available: RHSA-2026:77214 · Red Hat
  6. 2026-10-07 Fix available: RHSA-2026:77215 · Red Hat
  7. 2026-10-07 Fix available: Red Hat Enterprise Linux AppStream E4S (v.9.2), Red Hat Enterprise Linux BaseOS E4S (v.9.2), Red Hat Enterprise Linux Real Time E4S (v.9.2) +1 · Red Hat
  8. 2026-10-07 Fix available: RHSA-2026:77217 · Red Hat
  9. 2026-10-07 Fix available: Red Hat Enterprise Linux BaseOS AUS (v.8.4), Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) · Red Hat
  10. 2026-10-20 Fix available: RHSA-2026:85000 · Red Hat
  11. 2026-10-20 Fix available: Red Hat Enterprise Linux BaseOS AUS (v.8.6), Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) · Red Hat
  12. 2026-10-30 Fix available: RHSA-2026:91492 · Red Hat
  13. 2026-10-30 Fix available: Red Hat CodeReady Linux Builder EUS (v.9.6), Red Hat Enterprise Linux AppStream EUS (v.9.6), Red Hat Enterprise Linux BaseOS EUS (v.9.6) +2 · Red Hat
  14. 2026-10-30 Fix available: Red Hat Enterprise Linux BaseOS E4S (v.8.8), Red Hat Enterprise Linux BaseOS TUS (v.8.8) · Red Hat
  15. 2026-10-31 Fix available: RHSA-2026:92997 · Red Hat

References

Patch 6

Other 3

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

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