CVE-2025-38079

Published Jun 18, 2025

Last updated 3 months ago

Overview

Description
In the Linux kernel, the following vulnerability has been resolved: crypto: algif_hash - fix double free in hash_accept If accept(2) is called on socket type algif_hash with MSG_MORE flag set and crypto_ahash_import fails, sk2 is freed. However, it is also freed in af_alg_release, leading to slab-use-after-free error.
Source
416baaa9-dc9f-4396-8d5f-8c081fb06d67
NVD status
Modified
Products
linux_kernel, debian_linux

Risk scores

CVSS 3.1

Type
Primary
Base score
7.8
Impact score
5.9
Exploitability score
1.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity
HIGH

Weaknesses

nvd@nist.gov
CWE-415

Social media

Hype score
Not currently trending
  1. 🔐 CRITICAL SECURITY UPDATE: #SUSE has released Live Patch 10 for SLE 15 SP6 to address four severe Linux kernel vulnerabilities (CVE-2025-38079, CVE-2025-38083, CVE-2025-38494, CVE-2025-38495). Read more:👉 https://t.co/5YM9f2Q65j #Security https://t.co/uOIWxyLxDi

    @Cezar_H_Linux

    22 Aug 2025

    30 Impressions

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  2. 🔐 CRITICAL SECURITY UPDATE for @SUSE & @openSUSE users. Live Patch 59 for SLE 15 SP3 / Leap 15.3 patches 3 kernel vulnerabilities: CVE-2025-38494 (CVSS 8.5) CVE-2025-38495 (CVSS 8.5) CVE-2025-38079 (CVSS 7.3) Read more:👉 https://t.co/XSUmOav4

    @Cezar_H_Linux

    22 Aug 2025

    6 Impressions

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  3. URGENT: Patch your #SUSE Linux systems now! New kernel update fixes 5 critical vulnerabilities (CVSS up to 8.5): ✅ CVE-2025-38494. ✅ CVE-2025-38495. ✅ CVE-2025-38079. Affects: SLE 15 SP3, Leap 15.3. Read more:👉 https://t.co/fDkvsYuDOK #Security https://t.co/UUYWk2VlHp

    @Cezar_H_Linux

    22 Aug 2025

    38 Impressions

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  4. URGENT: Patch #SUSE SLE 15 SP6 NOW. Live Patch 11 fixes 4 critical kernel vulnerabilities (CVE-2025-38494, CVE-2025-38495, CVE-2025-38079, CVE-2025-38083) with CVSS scores up to 8.5. Don't risk a breach. Read more:👉 https://t.co/Inku2xAAwA #Security https://t.co/hkVOvbNo6c

    @Cezar_H_Linux

    22 Aug 2025

    42 Impressions

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  5. URGENT: #SUSE releases critical kernel security patch for SLE 15 SP6 / openSUSE Leap 15.6. Patches 4 vulnerabilities: ✅ CVE-2025-38494 (CVSS 8.5) ✅ CVE-2025-38495 (CVSS 8.5) ✅ CVE-2025-38079 ✅ CVE-2025-38083 Read more: 👉 https://t.co/anKbMUMkxS https://t.co/F367XNvS0u

    @Cezar_H_Linux

    21 Aug 2025

    18 Impressions

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  6. 🚨 URGENT #Security Update for #Ubuntu 22.04 LTS users. Multiple critical vulnerabilities (CVE-2025-38079, etc.) patched in the Linux FIPS kernel. Affects Crypto API, Network, & NVMe drivers. Read more:👉 https://t.co/ryYbDzUwSM https://t.co/kdIYZgJmzZ

    @Cezar_H_Linux

    20 Aug 2025

    19 Impressions

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  7. 🚨 Critical kernel update! #SUSE’s Live Patch 38 fixes: ✅ CVE-2025-38494 (8.5) - HID bypass. ✅ CVE-2025-38079 - Crypto double-free. ✅ 3 other CVEs. Read more:👉 https://t.co/Rv9Q9w8D0J #Security https://t.co/y6ari0EIUs

    @Cezar_H_Linux

    18 Aug 2025

    39 Impressions

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  8. Critical #SUSE kernel update! Patch now for: ✅ CVE-2025-38494/95 (CVSS 8.5 - USB privilege escalation). ✅ CVE-2025-38079 (RCE via crypto API). ✅ 3 other high-risk flaws. Read more: 👉 https://t.co/a6R0CxGfem #Security https://t.co/jTEVRJrTa0

    @Cezar_H_Linux

    18 Aug 2025

    30 Impressions

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  9. 🚨 #SUSE Kernel Patch 68: Fixes 4 HIGH-risk CVEs (CVE-2025-38494/5, CVE-2025-38079/83). ✅ CVSS 8.5: HID heap overflows → root access ✅ SLE 12 SP5 affected ⏰ Patch IMMEDIATELY. Read more:👉 https://t.co/8UyqXdbxk4 #Security https://t.co/is9yDCKTtw

    @Cezar_H_Linux

    18 Aug 2025

    19 Impressions

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  10. ‼️ CRITICAL #Linux Kernel Patches: #SUSE SU-2025:02827-1 for SLE 12 SP5 (Live Patch 67) fixes 4 vulns (CVE-2025-38494/5, CVE-2025-38079/83). CVSS 8.5! Local priv escalation/code exec risk. ⚠️ Read more: 👉 https://t.co/TqhCNYU3Rr #Security https://t.co/c1hSjcTcsW

    @Cezar_H_Linux

    18 Aug 2025

    33 Impressions

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  11. 🚨 Breaking: #SUSE kernel update (SU-2025:02820-1) patches: CVE-2025-38494 (HID hijacking) CVE-2025-38079 (Crypto crash) Patch IMMEDIATELY if using #Linux Real-Time. Details. Read more: 👉 https://t.co/h8HRH5pyGM #Security https://t.co/aSsax12lub

    @Cezar_H_Linux

    18 Aug 2025

    43 Impressions

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  12. CVE-2025-38079 In the Linux kernel, the following vulnerability has been resolved: crypto: algif_hash - fix double free in hash_accept If accept(2) is called on socket type algif_… https://t.co/Tpem3L8548

    @CVEnew

    18 Jun 2025

    163 Impressions

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Configurations

  1. In the Linux kernel, the following vulnerability has been resolved: cgroup: Avoid iteration of dying tasks with zero refcount The commit 260fbcb92bbea ("cgroup: Move dying_tasks cleanup from cgroup_task_release() to cgroup_task_free()") extended the lifetime of tasks on the dying_tasks list. The iterators have provision to go through dying_tasks because of dying threadgroup leaders or explicit CSS_TASK_ITER_WITH_DEAD, however, it was expected that such tasks can obtain a new reference (that is possible before cgroup_task_release()/put_task_struct_rcu_user()). The tasks after cgroup_task_release() and before cgroup_task_free() are subject to race when they may or may not have ->usage count > 0. The race window is between css_task_iter_next() invocations when css_set_lock is released and we may arrive at a new ->task_pos. The iterator should not attempt to resurrect tasks whose ->usage count dropped to zero. (When that happens, __put_task_struct_rcu_cb() is already imminent and the returned task_struct would could be used after free.) As for the fix, we cannot simply check the signal->live count of a task on the dying list because that won't distinguish regular zombies waiting to be reaped from RCU remnant tasks that are going to be free'd. Therefore add an extra check to rule out ->usage==0 tasks from any iteration. The repeat: loop in css_task_iter_advance() doesn't consider ->usage count, so add a new loop to css_task_iter_next() to skip de-used tasks on the dying_list. Rough illustration of the possible race R (reader of cgroup.procs) T (thread) L (group leader) --------------------------------- -------------------------------- -------------------------------- L exits, signal->live > 0 cgroup_task_dead(L) css_set_skip_task_iters() // skips only cset->tasks list_add_tail(&L->cg_list, &cset->dying_tasks) css_task_iter_next() take css_set_lock css_task_iter_advance() leader && signal->live != 0 => it->task_pos = &L->cg_list release css_set_lock T exits --signal->live == 0 cgroup_task_dead(T) // css_set_lock release_task(T) cgroup_task_release(T) release_task(L) // zap_leader cgroup_task_release(L) put_task_struct_rcu_user(L) ...RCU... put_task_struct(L) L->usage = 0 /* L still on dying_tasks */ ...RCU... __put_task_struct(L) css_task_iter_next() // another iteration take css_set_lock it->task_pos = &L->cg_list get_task_struct(L) => addition on 0 drop css_set_lock cgroup_task_free(L) css_set_skip_task_iters() // dying skip comes too late free_task(L) cgroup_procs_show() task_pid_vnr(L)•CVE-2026-98163