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TI-2026-31458 Aliases CVE-2026-43279GHSA-2hw8-5267-5p9j

ALSA: usb-audio: Add sanity check for OOB writes at silencing

Priority LOW 35CWE-787Published · 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: 41 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-787 and the CVSS impact.

Summary

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Add sanity check for OOB writes at silencing At silencing the playback URB packets in the implicit fb mode before the actual playback, we blindly assume that the received packets fit with the buffer size. But when the setup in the capture stream differs from the playback stream (e.g. due to the USB core limitation of max packet size), such an inconsistency may lead to OOB writes to the buffer, resulting in a crash. For addressing it, add a sanity check of the transfer buffer size at prepare_silent_urb(), and stop the data copy if the received data overflows. Also, report back the transfer error properly from there, too. Note that this doesn't fix the root cause of the playback error itself, but this merely covers the kernel Oops.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00123 2nd percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.15.202, 6.1.165, 6.6.128 +4Red Hat: 14 advisoriesRed Hat: 41 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux3.5 and later5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.16, 6.19.6, 7.0Patch availableCNA
  • Linux VendorLinux Affected 3.5 and later Fixed in 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.16, 6.19.6, 7.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*3.5 to before 5.15.202; 5.16 to before 6.1.165; 6.2 to before 6.6.128; 6.7 to before 6.12.75; 6.13 to before 6.18.16; 6.19 to before 6.19.6VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 3.5 to before 5.15.202; 5.16 to before 6.1.165; 6.2 to before 6.6.128; 6.7 to before 6.12.75; 6.13 to before 6.18.16; 6.19 to before 6.19.6 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.15.202, 6.1.165, 6.6.128, 6.12.75, 6.18.16, 6.19.6, 7.0

Red Hat 14 advisories

  • RHSA-2026:55445 Released 2026-08-17 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) kernel-64k-debug-devel-6.12.0-55.98.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.98.1.el10_0, kernel-64k-devel-6.12.0-55.98.1.el10_0 +12
    • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel-6.12.0-55.98.1.el10_0, kernel-64k-6.12.0-55.98.1.el10_0, kernel-64k-core-6.12.0-55.98.1.el10_0 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) kernel-tools-libs-devel-6.12.0-55.98.1.el10_0, libperf-6.12.0-55.98.1.el10_0
    • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt-6.12.0-55.98.1.el10_0, kernel-rt-64k-6.12.0-55.98.1.el10_0, kernel-rt-64k-core-6.12.0-55.98.1.el10_0 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt-6.12.0-55.98.1.el10_0, kernel-rt-core-6.12.0-55.98.1.el10_0, kernel-rt-debug-6.12.0-55.98.1.el10_0 +11
  • RHSA-2026:47633 Released 2026-07-30 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.4) bpftool-4.18.0-305.199.1.el8_4, kernel-4.18.0-305.199.1.el8_4, kernel-abi-stablelists-4.18.0-305.199.1.el8_4 +14
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) bpftool-4.18.0-305.199.1.el8_4, kernel-4.18.0-305.199.1.el8_4, kernel-abi-stablelists-4.18.0-305.199.1.el8_4 +14
  • RHSA-2026:46461 Released 2026-07-27 · Red Hat rating Moderate
    kernel-rt security update
    • Red Hat Enterprise Linux for Real Time (v. 7 ELS) kernel-rt-3.10.0-1160.157.1.rt56.1309.el7, kernel-rt-debug-3.10.0-1160.157.1.rt56.1309.el7, kernel-rt-debug-devel-3.10.0-1160.157.1.rt56.1309.el7 +4
Show 11 more Red Hat advisories
  • RHSA-2026:44522 Released 2026-07-23 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux Server (v. 7 ELS) bpftool-3.10.0-1160.157.1.el7, kernel-3.10.0-1160.157.1.el7, kernel-abi-whitelists-3.10.0-1160.157.1.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7 ELS) kernel-debug-devel-3.10.0-1160.157.1.el7, kernel-tools-libs-devel-3.10.0-1160.157.1.el7
  • RHSA-2026:38902 Released 2026-07-13 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder EUS (v.9.6) kernel-tools-libs-devel-5.14.0-570.127.1.el9_6, libperf-5.14.0-570.127.1.el9_6
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) kernel-64k-debug-devel-5.14.0-570.127.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.127.1.el9_6, kernel-64k-devel-5.14.0-570.127.1.el9_6 +12
    • Red Hat Enterprise Linux BaseOS EUS (v.9.6) kernel-5.14.0-570.127.1.el9_6, kernel-64k-5.14.0-570.127.1.el9_6, kernel-64k-core-5.14.0-570.127.1.el9_6 +28
    • Red Hat Enterprise Linux Real Time EUS (v.9.6) kernel-rt-5.14.0-570.127.1.el9_6, kernel-rt-64k-5.14.0-570.127.1.el9_6, kernel-rt-64k-core-5.14.0-570.127.1.el9_6 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6) kernel-rt-5.14.0-570.127.1.el9_6, kernel-rt-core-5.14.0-570.127.1.el9_6, kernel-rt-debug-5.14.0-570.127.1.el9_6 +11
  • RHSA-2026:36767 Released 2026-07-08 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream E4S (v.9.4) kernel-64k-debug-devel-5.14.0-427.136.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.136.1.el9_4, kernel-64k-devel-5.14.0-427.136.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS E4S (v.9.4) bpftool-7.3.0-427.136.1.el9_4, kernel-5.14.0-427.136.1.el9_4, kernel-64k-5.14.0-427.136.1.el9_4 +29
    • Red Hat Enterprise Linux Real Time E4S (v.9.4) kernel-rt-5.14.0-427.136.1.el9_4, kernel-rt-core-5.14.0-427.136.1.el9_4, kernel-rt-debug-5.14.0-427.136.1.el9_4 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4) kernel-rt-5.14.0-427.136.1.el9_4, kernel-rt-core-5.14.0-427.136.1.el9_4, kernel-rt-debug-5.14.0-427.136.1.el9_4 +11
  • RHSA-2026:35894 Released 2026-07-06 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.199.1.el8_6, kernel-4.18.0-372.199.1.el8_6, kernel-abi-stablelists-4.18.0-372.199.1.el8_6 +14
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6) bpftool-4.18.0-372.199.1.el8_6, kernel-4.18.0-372.199.1.el8_6, kernel-abi-stablelists-4.18.0-372.199.1.el8_6 +14
  • RHSA-2026:35863 Released 2026-07-06 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux BaseOS E4S (v.8.8) bpftool-4.18.0-477.150.1.el8_8, kernel-4.18.0-477.150.1.el8_8, kernel-abi-stablelists-4.18.0-477.150.1.el8_8 +14
    • Red Hat Enterprise Linux BaseOS TUS (v.8.8) bpftool-4.18.0-477.150.1.el8_8, kernel-4.18.0-477.150.1.el8_8, kernel-abi-stablelists-4.18.0-477.150.1.el8_8 +14
  • RHSA-2026:34095 Released 2026-07-01 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) kernel-64k-debug-devel-5.14.0-284.178.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.178.1.el9_2, kernel-64k-devel-5.14.0-284.178.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool-7.0.0-284.178.1.el9_2, kernel-5.14.0-284.178.1.el9_2, kernel-64k-5.14.0-284.178.1.el9_2 +29
  • RHSA-2026:33900 Released 2026-07-01 · Red Hat rating Important
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt-5.14.0-284.178.1.rt14.463.el9_2, kernel-rt-core-5.14.0-284.178.1.rt14.463.el9_2, kernel-rt-debug-5.14.0-284.178.1.rt14.463.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt-5.14.0-284.178.1.rt14.463.el9_2, kernel-rt-core-5.14.0-284.178.1.rt14.463.el9_2, kernel-rt-debug-5.14.0-284.178.1.rt14.463.el9_2 +11
  • RHSA-2026:33685 Released 2026-06-30 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-211.29.1.el10_2, kernel-64k-debug-devel-matched-6.12.0-211.29.1.el10_2, kernel-64k-devel-6.12.0-211.29.1.el10_2 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-211.29.1.el10_2, kernel-64k-6.12.0-211.29.1.el10_2, kernel-64k-core-6.12.0-211.29.1.el10_2 +29
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-211.29.1.el10_2, libperf-6.12.0-211.29.1.el10_2
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-211.29.1.el10_2, kernel-rt-64k-6.12.0-211.29.1.el10_2, kernel-rt-64k-core-6.12.0-211.29.1.el10_2 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-211.29.1.el10_2, kernel-rt-core-6.12.0-211.29.1.el10_2, kernel-rt-debug-6.12.0-211.29.1.el10_2 +9
  • RHSA-2026:27789 Released 2026-06-22 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-687.17.1.el9_8, kernel-64k-debug-devel-matched-5.14.0-687.17.1.el9_8, kernel-64k-devel-5.14.0-687.17.1.el9_8 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-687.17.1.el9_8, kernel-64k-5.14.0-687.17.1.el9_8, kernel-64k-core-5.14.0-687.17.1.el9_8 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-687.17.1.el9_8, libperf-5.14.0-687.17.1.el9_8
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-687.17.1.el9_8, kernel-rt-64k-5.14.0-687.17.1.el9_8, kernel-rt-64k-core-5.14.0-687.17.1.el9_8 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-687.17.1.el9_8, kernel-rt-core-5.14.0-687.17.1.el9_8, kernel-rt-debug-5.14.0-687.17.1.el9_8 +9
  • RHSA-2026:27353 Released 2026-06-19 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.136.1.el8_10, kernel-4.18.0-553.136.1.el8_10, kernel-abi-stablelists-4.18.0-553.136.1.el8_10 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.136.1.el8_10
  • RHSA-2026:27354 Released 2026-06-19 · Red Hat rating Important
    kernel-rt security, bug fix, and enhancement update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.136.1.rt7.477.el8_10, kernel-rt-core-4.18.0-553.136.1.rt7.477.el8_10, kernel-rt-debug-4.18.0-553.136.1.rt7.477.el8_10 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.136.1.rt7.477.el8_10, kernel-rt-core-4.18.0-553.136.1.rt7.477.el8_10, kernel-rt-debug-4.18.0-553.136.1.rt7.477.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 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat CodeReady Linux Builder EUS (v.9.6)Fixed RHSA-2026:38902
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:33685
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:27789
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:34095
Red Hat Enterprise Linux AppStream E4S (v.9.4)Fixed RHSA-2026:36767
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:55445
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:38902
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2026:33685
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2026:27353
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2026:27789
Red Hat Enterprise Linux BaseOS AUS (v.8.4)Fixed RHSA-2026:47633
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2026:35894
Red Hat Enterprise Linux BaseOS E4S (v.8.8)Fixed RHSA-2026:35863
Red Hat Enterprise Linux BaseOS E4S (v.9.2)Fixed RHSA-2026:34095
Red Hat Enterprise Linux BaseOS E4S (v.9.4)Fixed RHSA-2026:36767
Red Hat Enterprise Linux BaseOS EUS (v. 10.0)Fixed RHSA-2026:55445
Red Hat Enterprise Linux BaseOS EUS (v.9.6)Fixed RHSA-2026:38902
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)Fixed RHSA-2026:47633
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.6)Fixed RHSA-2026:35894
Red Hat Enterprise Linux BaseOS TUS (v.8.8)Fixed RHSA-2026:35863
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2026:27353
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:33685
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2026:27789
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:55445
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2026:27354
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2026:27354
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2026:33685
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2026:27789
Red Hat Enterprise Linux Real Time E4S (v.9.2)Fixed RHSA-2026:33900
Red Hat Enterprise Linux Real Time E4S (v.9.4)Fixed RHSA-2026:36767
Red Hat Enterprise Linux Real Time EUS (v. 10.0)Fixed RHSA-2026:55445
Red Hat Enterprise Linux Real Time EUS (v.9.6)Fixed RHSA-2026:38902
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2026:33685
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2026:27789
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)Fixed RHSA-2026:33900
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.4)Fixed RHSA-2026:36767
Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)Fixed RHSA-2026:55445
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.6)Fixed RHSA-2026:38902
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2026:44522
Red Hat Enterprise Linux Server Optional (v. 7 ELS)Fixed RHSA-2026:44522
Red Hat Enterprise Linux for Real Time (v. 7 ELS)Fixed RHSA-2026:46461

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-43279
  2. 2026-10-03 Alias added: GHSA-2hw8-5267-5p9j
  3. 2026-10-16 CISA SSVC decision points changed
  4. 2026-10-19 Weakness changed · CISA ADP

References

Patch 7

  • 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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