5.5

CVE-2024-48881: linux NULL Pointer Dereference

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2024-48881DEBIAN-CVE-2024-48881
Published 11-01-2025Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2024-48881 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 16.6% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.26%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 47 · Related 45
DLA-4075-1DLA-4076-1MGASA-2025-0030MGASA-2025-0032SUSE-SU-2025:0289-1SUSE-SU-2025:0428-1

Timeline

  1. 11-01-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: bcache: revert replacing IS_ERR_OR_NULL with IS_ERR again Commit 028ddcac477b ("bcache: Remove unnecessary NULL point check in node allocations") leads a NULL pointer deference in cache_set_flush(). 1721 if (!IS_ERR_OR_NULL(c->root)) 1722 list_add(&c->root->list, &c->btree_cache); >From the above code in cache_set_flush(), if previous registration code fails before allocating c->root, it is possible c->root is NULL as what it is initialized. __bch_btree_node_alloc() never returns NULL but c->root is possible to be NULL at above line 1721. This patch replaces IS_ERR() by IS_ERR_OR_NULL() to fix this.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.26%

Chance of exploitation in the next 30 days

Percentile

17%

Versus all other CVEs

30-day change

+0.01 pp

From 0.25% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.26%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu131 products
  • linux< 5.4.0-211.231 | < 5.15.0-135.146 | < 6.8.0-58.60
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.4.0-1142.152 | < 5.15.0-1080.87 | < 6.8.0-1027.29
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 0729029e647234fa1a94376b6edffec5c2cd75f6, < 4379c5828492a4c2a651c8f826a01453bd2b80b0 | ≥ db9439cef0b5efccf8021fe89f4953e0f901e85b, < 336e30f32ae7c043fde0f6fa21586ff30bea9fe2 | ≥ 991e9c186a8ac6ab272a86e0ddc6f9733c38b867, < fb5fee35bdd18316a84b5f30881a24e1415e1464 | ≥ 68118c339c6e1e16ae017bef160dbe28a27ae9c8, < 5202391970ffbf81975251b3526b890ba027b715 | ≥ 028ddcac477b691dd9205c92f991cc15259d033e, < cc05aa2c0117e20fa25a3c0d915f98b8f2e78667 | ≥ 028ddcac477b691dd9205c92f991cc15259d033e, < 5e0e913624bcd24f3de414475018d3023f060ee1 | ≥ 028ddcac477b691dd9205c92f991cc15259d033e, < b2e382ae12a63560fca35050498e19e760adf8c0 | fe75e8a0c20127a8dc95704f1a7ad6b82c9a0ef8 | 0cabf9e164660e8d66c4810396046383a1110a69 | ≥ 5.4.251, < 5.4.287 | ≥ 5.10.188, < 5.10.231 | ≥ 5.15.121, < 5.15.174 | ≥ 6.1.39, < 6.1.120 | ≥ 4.19.291, < 4.20 | ≥ 6.4.4, < 6.5 | 6.5
  • linux_kernel≥ 4.19.291, < 4.20 | ≥ 5.4.251, < 5.4.287 | ≥ 5.10.188, < 5.10.231 | ≥ 5.15.121, < 5.15.174 | ≥ 6.1.39, < 6.1.120 | ≥ 6.4.4, < 6.6.66 | ≥ 6.7, < 6.12.5 | 6.13:rc1
Debian1 product
  • linux< 6.1.123-1 | < 6.12.5-1

3 vendors · 134 products

References

52 links
Show all 52 references