CVE-2024-53097

MEDIUM EPSS 13.3%
Published Nov 25, 20241y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Nov 25, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: mm: krealloc: Fix MTE false alarm in __do_krealloc This patch addresses an issue introduced by commit 1a83a716ec233 ("mm: krealloc: consider spare memory for __GFP_ZERO") which causes MTE (Memory Tagging Extension) to falsely report a slab-out-of-bounds error. The problem occurs when zeroing out spare memory in __do_krealloc. The original code only considered software-based KASAN and did not account for MTE. It does not reset the KASAN tag before calling memset, leading to a mismatch between the pointer tag and the memory tag, resulting in a false positive. Example of the error: ================================================================== swapper/0: BUG: KASAN: slab-out-of-bounds in __memset+0x84/0x188 swapper/0: Write at addr f4ffff8005f0fdf0 by task swapper/0/1 swapper/0: Pointer tag: [f4], memory tag: [fe] swapper/0: swapper/0: CPU: 4 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12. swapper/0: Hardware name: MT6991(ENG) (DT) swapper/0: Call trace: swapper/0: dump_backtrace+0xfc/0x17c swapper/0: show_stack+0x18/0x28 swapper/0: dump_stack_lvl+0x40/0xa0 swapper/0: print_report+0x1b8/0x71c swapper/0: kasan_report+0xec/0x14c swapper/0: __do_kernel_fault+0x60/0x29c swapper/0: do_bad_area+0x30/0xdc swapper/0: do_tag_check_fault+0x20/0x34 swapper/0: do_mem_abort+0x58/0x104 swapper/0: el1_abort+0x3c/0x5c swapper/0: el1h_64_sync_handler+0x80/0xcc swapper/0: el1h_64_sync+0x68/0x6c swapper/0: __memset+0x84/0x188 swapper/0: btf_populate_kfunc_set+0x280/0x3d8 swapper/0: __register_btf_kfunc_id_set+0x43c/0x468 swapper/0: register_btf_kfunc_id_set+0x48/0x60 swapper/0: register_nf_nat_bpf+0x1c/0x40 swapper/0: nf_nat_init+0xc0/0x128 swapper/0: do_one_initcall+0x184/0x464 swapper/0: do_initcall_level+0xdc/0x1b0 swapper/0: do_initcalls+0x70/0xc0 swapper/0: do_basic_setup+0x1c/0x28 swapper/0: kernel_init_freeable+0x144/0x1b8 swapper/0: kernel_init+0x20/0x1a8 swapper/0: ret_from_fork+0x10/0x20 ==================================================================

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
13.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 6

VendorProductVersionRange
linuxlinux_kernel*≥5.10.227  –  <5.10.230
linuxlinux_kernel*≥5.15.168  –  <5.15.173
linuxlinux_kernel*≥6.1.113  –  <6.1.118
linuxlinux_kernel*≥6.6.55  –  <6.6.62
linuxlinux_kernel*≥6.11.3  –  <6.11.9
linuxlinux_kernel6.10.14any

References 9

  • git.kernel.org https://git.kernel.org/stable/c/3dfb40da84f26dd35dd9bbaf626a2424565b8406
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/486aeb5f1855c75dd810c25036134961bd2a6722
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/704573851b51808b45dae2d62059d1d8189138a2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/71548fada7ee0eb50cc6ccda82dff010c745f92c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8ebee7565effdeae6085458f8f8463363120a871
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d02492863023431c31f85d570f718433c22b9311
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d43f1430d47c22a0727c05b6f156ed25fecdfeb4
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/01/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/3dfb40da84f26dd35dd9bbaf626a2424565b8406
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/486aeb5f1855c75dd810c25036134961bd2a6722
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/704573851b51808b45dae2d62059d1d8189138a2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/71548fada7ee0eb50cc6ccda82dff010c745f92c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8ebee7565effdeae6085458f8f8463363120a871
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d02492863023431c31f85d570f718433c22b9311
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d43f1430d47c22a0727c05b6f156ed25fecdfeb4
    Patch