CVE-2025-38471

Advisory lineage Upstream: 0 Downstream: 93
Modified
Published: 28 Jul 2025, 11:21
Last modified:23 May 2026, 15:59

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.07% LOW
0% probability +0.05%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

28 Jul 2025, 11:21
Published
Vulnerability first disclosed
23 May 2026, 15:59
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: tls: always refresh the queue when reading sock After recent changes in net-next TCP compacts skbs much more aggressively. This unearthed a bug in TLS where we may try to operate on an old skb when checking if all skbs in the queue have matching decrypt state and geometry. BUG: KASAN: slab-use-after-free in tls_strp_check_rcv+0x898/0x9a0 [tls] (net/tls/tls_strp.c:436 net/tls/tls_strp.c:530 net/tls/tls_strp.c:544) Read of size 4 at addr ffff888013085750 by task tls/13529 CPU: 2 UID: 0 PID: 13529 Comm: tls Not tainted 6.16.0-rc5-virtme Call Trace: kasan_report+0xca/0x100 tls_strp_check_rcv+0x898/0x9a0 [tls] tls_rx_rec_wait+0x2c9/0x8d0 [tls] tls_sw_recvmsg+0x40f/0x1aa0 [tls] inet_recvmsg+0x1c3/0x1f0 Always reload the queue, fast path is to have the record in the queue when we wake, anyway (IOW the path going down "if !strp->stm.full_len").

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.07%• Percentile: 22%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • debian•debian_linux

    11.0

  • linux•linux

    ≥ 0d87bbd39d7fd1135ab9eca672d760470f6508e8, < 730fed2ff5e259495712518e18d9f521f61972bb | ≥ 0d87bbd39d7fd1135ab9eca672d760470f6508e8, < 1f3a429c21e0e43e8b8c55d30701e91411a4df02 | ≥ 0d87bbd39d7fd1135ab9eca672d760470f6508e8, < cdb767915fc9a15d88d19d52a1455f1dc3e5ddc8 | ≥ 0d87bbd39d7fd1135ab9eca672d760470f6508e8, < c76f6f437c46b2390888e0e1dc7aafafa9f4e0c6 | ≥ 0d87bbd39d7fd1135ab9eca672d760470f6508e8, < 4ab26bce3969f8fd925fe6f6f551e4d1a508c68b | 2277d7cbdf47531b2c3cd01ba15255fa955aab35 | ≥ 6.0.6, < 6.1 | 6.1

  • linux•linux_kernel

    ≥ 6.0.6, < 6.1 | ≥ 6.1.1, < 6.1.147 | ≥ 6.2, < 6.6.100 | ≥ 6.7, < 6.12.40 | ≥ 6.13, < 6.15.8 | 6.1 | 6.1:rc2 | 6.1:rc3 | 6.1:rc4 | 6.1:rc5 | 6.1:rc6 | 6.1:rc7 | 6.1:rc8 | 6.16:rc1 | 6.16:rc2 | 6.16:rc3 | 6.16:rc4 | 6.16:rc5 | 6.16:rc6

References (7)