CVE-2024-53174

HIGH EPSS 15.4%
Published Dec 27, 20241y ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Dec 27, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: make sure cache entry active before cache_show The function `c_show` was called with protection from RCU. This only ensures that `cp` will not be freed. Therefore, the reference count for `cp` can drop to zero, which will trigger a refcount use-after-free warning when `cache_get` is called. To resolve this issue, use `cache_get_rcu` to ensure that `cp` remains active. ------------[ cut here ]------------ refcount_t: addition on 0; use-after-free. WARNING: CPU: 7 PID: 822 at lib/refcount.c:25 refcount_warn_saturate+0xb1/0x120 CPU: 7 UID: 0 PID: 822 Comm: cat Not tainted 6.12.0-rc3+ #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.1-2.fc37 04/01/2014 RIP: 0010:refcount_warn_saturate+0xb1/0x120 Call Trace: <TASK> c_show+0x2fc/0x380 [sunrpc] seq_read_iter+0x589/0x770 seq_read+0x1e5/0x270 proc_reg_read+0xe1/0x140 vfs_read+0x125/0x530 ksys_read+0xc1/0x160 do_syscall_64+0x5f/0x170 entry_SYSCALL_64_after_hwframe+0x76/0x7e

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
15.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel* <5.4.287
linuxlinux_kernel*≥5.5  –  <5.10.231
linuxlinux_kernel*≥5.11  –  <5.15.174
linuxlinux_kernel*≥5.16  –  <6.1.120
linuxlinux_kernel*≥6.2  –  <6.6.64
linuxlinux_kernel*≥6.7  –  <6.11.11
linuxlinux_kernel*≥6.12  –  <6.12.2

References 10

  • git.kernel.org https://git.kernel.org/stable/c/02999e135b013d85c6df738746e8e24699befee4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/068c0b50f3f700b94f78850834cd91ae3b34c2c1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2862eee078a4d2d1f584e7f24fa50dddfa5f3471
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/acfaf37888e0f0732fb6a50ff093dce6d99994d0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c7dac3af57e38b2054f990e573256d90bf887958
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d882e2b7fad3f5e5fac66184a347f408813f654a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e9be26735d055c42543a4d047a769cc6d0fb1504
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ec305f303bf070b4f6896b7a76009f702956d402
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/02999e135b013d85c6df738746e8e24699befee4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/068c0b50f3f700b94f78850834cd91ae3b34c2c1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2862eee078a4d2d1f584e7f24fa50dddfa5f3471
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/acfaf37888e0f0732fb6a50ff093dce6d99994d0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c7dac3af57e38b2054f990e573256d90bf887958
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d882e2b7fad3f5e5fac66184a347f408813f654a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e9be26735d055c42543a4d047a769cc6d0fb1504
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ec305f303bf070b4f6896b7a76009f702956d402
    Patch