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

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于TLS读取套接字时未刷新队列，可能导致使用已释放的skb。

CVSS 9.8 · Critical EPSS 0.44% · P37

Possible ATT&CK Techniques 1 AI

T1499.002 · Service Exhaustion Flood

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 0d87bbd39d7fd1135ab9eca672d760470f6508e8< 730fed2ff5e259495712518e18d9f521f61972bb affected
0d87bbd39d7fd1135ab9eca672d760470f6508e8< 1f3a429c21e0e43e8b8c55d30701e91411a4df02 affected
0d87bbd39d7fd1135ab9eca672d760470f6508e8< cdb767915fc9a15d88d19d52a1455f1dc3e5ddc8 affected
0d87bbd39d7fd1135ab9eca672d760470f6508e8< c76f6f437c46b2390888e0e1dc7aafafa9f4e0c6 affected
0d87bbd39d7fd1135ab9eca672d760470f6508e8< 4ab26bce3969f8fd925fe6f6f551e4d1a508c68b affected
2277d7cbdf47531b2c3cd01ba15255fa955aab35 affected
6.0.6< 6.1 affected
6.1 affected
… +6 more rows
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I. Basic Information for CVE-2025-38471

Vulnerability Information
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Vulnerability Title
tls: always refresh the queue when reading sock
Source: CVE Program / CVE List V5
Vulnerability 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").
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于TLS读取套接字时未刷新队列，可能导致使用已释放的skb。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 0d87bbd39d7fd1135ab9eca672d760470f6508e8 ~ 730fed2ff5e259495712518e18d9f521f61972bb -
Linux Linux 6.1 -

II. Public POCs for CVE-2025-38471

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III. Intelligence Information for CVE-2025-38471

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Same Patch Batch · Linux · 2025-07-28 · 29 CVEs total

CVE-2025-38488 9.8 CRITICAL smb: client: fix use-after-free in crypt_message when using async crypto
CVE-2025-38490 9.8 CRITICAL net: libwx: remove duplicate page_pool_put_full_page()
CVE-2025-38472 9.8 CRITICAL netfilter: nf_conntrack: fix crash due to removal of uninitialised entry
CVE-2025-38476 9.8 CRITICAL rpl: Fix use-after-free in rpl_do_srh_inline().
CVE-2025-38495 8.8 HIGH HID: core: ensure the allocated report buffer can contain the reserved report ID
CVE-2025-38491 8.2 HIGH mptcp: make fallback action and fallback decision atomic
CVE-2025-38478 7.8 HIGH comedi: Fix initialization of data for instructions that write to subdevice
CVE-2025-38485 7.8 HIGH iio: accel: fxls8962af: Fix use after free in fxls8962af_fifo_flush
CVE-2025-38486 7.8 HIGH soundwire: Revert "soundwire: qcom: Add set_channel_map api support"
CVE-2025-38484 7.8 HIGH iio: backend: fix out-of-bound write
CVE-2025-38494 7.8 HIGH HID: core: do not bypass hid_hw_raw_request
CVE-2025-38477 7.8 HIGH net/sched: sch_qfq: Fix race condition on qfq_aggregate
CVE-2025-38475 7.8 HIGH smc: Fix various oops due to inet_sock type confusion.
CVE-2025-38470 7.8 HIGH net: vlan: fix VLAN 0 refcount imbalance of toggling filtering during runtime
CVE-2025-38493 tracing/osnoise: Fix crash in timerlat_dump_stack()
CVE-2025-38492 netfs: Fix race between cache write completion and ALL_QUEUED being set
CVE-2025-38497 usb: gadget: configfs: Fix OOB read on empty string write
CVE-2025-38496 dm-bufio: fix sched in atomic context
CVE-2025-38468 net/sched: Return NULL when htb_lookup_leaf encounters an empty rbtree
CVE-2025-38489 s390/bpf: Fix bpf_arch_text_poke() with new_addr == NULL again

Showing top 20 of 29 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-38471

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