Read the docs
TI-2026-18645 Aliases CVE-2026-23208GHSA-gmr7-w89v-rr2q

ALSA: usb-audio: Prevent excessive number of frames

Priority LOW 33CWE-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: 5 without a fix

Attack profile from CVSS 3.1 · NVD. 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: Prevent excessive number of frames In this case, the user constructed the parameters with maxpacksize 40 for rate 22050 / pps 1000, and packsize[0] 22 packsize[1] 23. The buffer size for each data URB is maxpacksize * packets, which in this example is 40 * 6 = 240; When the user performs a write operation to send audio data into the ALSA PCM playback stream, the calculated number of frames is packsize[0] * packets = 264, which exceeds the allocated URB buffer size, triggering the out-of-bounds (OOB) issue reported by syzbot [1]. Added a check for the number of single data URB frames when calculating the number of frames to prevent [1]. [1] BUG: KASAN: slab-out-of-bounds in copy_to_urb+0x261/0x460 sound/usb/pcm.c:1487 Write of size 264 at addr ffff88804337e800 by task syz.0.17/5506 Call Trace: copy_to_urb+0x261/0x460 sound/usb/pcm.c:1487 prepare_playback_urb+0x953/0x13d0 sound/usb/pcm.c:1611 prepare_outbound_urb+0x377/0xc50 sound/usb/endpoint.c:333

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00186 8th percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.4.230, 4.9.230, 4.14.188 +8Red Hat: 5 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux4.4.229 to before 4.4.230; 4.9.229 to before 4.9.230; 4.14.186 to before 4.14.188; 4.19.130 to before 4.19.132; 5.4.49 to before 5.4.51; 5.7.6 to before 5.7.84.4.230, 4.9.230, 4.14.188, 4.19.132, 5.4.51, 5.7.8Patch availableCNA
LinuxLinux5.8 and later4.4.230, 4.9.230, 4.14.188, 4.19.132, 5.4.51, 5.7.8, 6.1.191, 6.6.160, 6.12.114, 6.18.10, 6.19Patch availableCNA
  • Linux VendorLinux Affected 4.4.229 to before 4.4.230; 4.9.229 to before 4.9.230; 4.14.186 to before 4.14.188; 4.19.130 to before 4.19.132; 5.4.49 to before 5.4.51; 5.7.6 to before 5.7.8 Fixed in 4.4.230, 4.9.230, 4.14.188, 4.19.132, 5.4.51, 5.7.8 Patch available CNA
  • Linux VendorLinux Affected 5.8 and later Fixed in 4.4.230, 4.9.230, 4.14.188, 4.19.132, 5.4.51, 5.7.8, 6.1.191, 6.6.160, 6.12.114, 6.18.10, 6.19 Patch available CNA

CPE configurations NVD · 8

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*4.14.186 to before 4.14.188; 4.19.130 to before 4.19.132; 5.4.49 to before 5.4.51; 5.7.6 to before 5.7.8; 5.8 to before 6.18.10VulnerableLinux
cpe:2.3:o:linux:linux_kernel:4.4.229:*:*:*:*:*:*:*4.4.229VulnerableLinux
cpe:2.3:o:linux:linux_kernel:4.9.229:*:*:*:*:*:*:*4.9.229VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*6.19 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*6.19 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*6.19 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*6.19 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*6.19 rc5VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.14.186 to before 4.14.188; 4.19.130 to before 4.19.132; 5.4.49 to before 5.4.51; 5.7.6 to before 5.7.8; 5.8 to before 6.18.10 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:4.4.229:*:*:*:*:*:*:* Versions 4.4.229 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:4.9.229:*:*:*:*:*:*:* Versions 4.9.229 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:* Versions 6.19 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:* Versions 6.19 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:* Versions 6.19 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:* Versions 6.19 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:* Versions 6.19 rc5 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 4.4.230, 4.9.230, 4.14.188, 4.19.132, 5.4.51, 5.7.8
  • Fix · CNA Linux (Linux) Fixed in 4.4.230, 4.9.230, 4.14.188, 4.19.132, 5.4.51, 5.7.8, 6.1.191, 6.6.160, 6.12.114, 6.18.10, 6.19

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-23208
  2. 2026-10-03 Alias added: GHSA-gmr7-w89v-rr2q
  3. 2026-10-21 Fix available: Linux/Linux@152fc4f7b4a8af1c0418d2722f3b2729799cc837, Linux/[email protected], Linux/[email protected] +1 · CNA
  4. 2026-10-21 2 new references · CNA
  5. 2026-10-30 Fix available: Linux/Linux@581821f4b2ecbf411027b0af82b561ee208f4ba4, Linux/[email protected] · CNA
  6. 2026-10-30 1 new reference · CNA
  7. 2026-11-05 CISA SSVC decision points changed

References

Patch 8

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

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences