Critical 9.8Published Jul 28, 2025

CVE-2025-38471tls: always refresh the queue when reading sock

Updated under an hour ago (Oct 28, 2026, 2:30 AM ET)

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It affects Linux and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Not yet received
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 0d87bbd39d7fd1135ab9eca672d760470f6508e8 before 730fed2ff5e259495712518e18d9f521f61972bb; from 0d87bbd39d7fd1135ab9eca672d760470f6508e8 before 1f3a429c21e0e43e8b8c55d30701e91411a4df02; from 0d87bbd39d7fd1135ab9eca672d760470f6508e8 before cdb767915fc9a15d88d19d52a1455f1dc3e5ddc8; from 0d87bbd39d7fd1135ab9eca672d760470f6508e8 before c76f6f437c46b2390888e0e1dc7aafafa9f4e0c6; from 0d87bbd39d7fd1135ab9eca672d760470f6508e8 before 4ab26bce3969f8fd925fe6f6f551e4d1a508c68b; 2277d7cbdf47531b2c3cd01ba15255fa955aab35; from 6.0.6 before 6.1	CNA record
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.5	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.5	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.5	CISA ADP

References

References

https://git.kernel.org/stable/c/730fed2ff5e259495712518e18d9f521f61972bb
https://git.kernel.org/stable/c/1f3a429c21e0e43e8b8c55d30701e91411a4df02
https://git.kernel.org/stable/c/cdb767915fc9a15d88d19d52a1455f1dc3e5ddc8
https://git.kernel.org/stable/c/c76f6f437c46b2390888e0e1dc7aafafa9f4e0c6
https://git.kernel.org/stable/c/4ab26bce3969f8fd925fe6f6f551e4d1a508c68b

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.