5.5

CVE-2024-53097: mm: krealloc: Fix MTE false alarm in __do_krealloc

Modified
AliasesUBUNTU-CVE-2024-53097DEBIAN-CVE-2024-53097
Published 25-11-2024Last modified 23-05-2026

Vulnerability summary

CVE-2024-53097 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 13.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.23%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 19 · Related 14
DLA-4008-1DLA-4075-1MGASA-2024-0392MGASA-2024-0393RHSA-2025:6966USN-7288-1

Timeline

  1. 25-11-2024
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

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 metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

14%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.23% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu103 products
  • linux< 5.15.0-133.144
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1078.85
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ c383263ee82a01a5a9bc1a466025ccde39a38cae, < 8ebee7565effdeae6085458f8f8463363120a871 | ≥ a543785856249a5ba8c20468098601c0c33b1224, < d02492863023431c31f85d570f718433c22b9311 | ≥ 44f79667fefd52945a44d2a57a2cd3c554d7f4e0, < d43f1430d47c22a0727c05b6f156ed25fecdfeb4 | ≥ f8767d10bcbc2529540eb906906c0058e15cd918, < 486aeb5f1855c75dd810c25036134961bd2a6722 | ≥ e3a9fc1520a6606c6121aca8d6679c6b93de7fd8, < 71548fada7ee0eb50cc6ccda82dff010c745f92c | ≥ 3e9a65a38706866bf93e19f5b4936465188add10, < 3dfb40da84f26dd35dd9bbaf626a2424565b8406 | ≥ 1a83a716ec233990e1fd5b6fbb1200ade63bf450, < 704573851b51808b45dae2d62059d1d8189138a2 | 73388659ef0eea51747350530afdeadf8809ce9c | ≥ 6.10.14, < 6.11 | ≥ 5.10.227, < 5.10.230 | ≥ 5.15.168, < 5.15.173 | ≥ 6.1.113, < 6.1.118 | ≥ 6.6.55, < 6.6.62 | ≥ 6.11.3, < 6.11.9
  • linux_kernelEOL≥ 5.10.227, < 5.10.230 | ≥ 5.15.168, < 5.15.173 | ≥ 6.1.113, < 6.1.118 | ≥ 6.6.55, < 6.6.62 | ≥ 6.11.3, < 6.11.9 | 6.10.14
Debian1 product
  • linux< 6.1.119-1 | < 6.11.9-1

3 vendors · 106 products

References

28 links
Show all 28 references