CVE-2024-53057

HIGH EPSS 20.9%
Published Nov 19, 20241y ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
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Published Nov 19, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: net/sched: stop qdisc_tree_reduce_backlog on TC_H_ROOT In qdisc_tree_reduce_backlog, Qdiscs with major handle ffff: are assumed to be either root or ingress. This assumption is bogus since it's valid to create egress qdiscs with major handle ffff: Budimir Markovic found that for qdiscs like DRR that maintain an active class list, it will cause a UAF with a dangling class pointer. In 066a3b5b2346, the concern was to avoid iterating over the ingress qdisc since its parent is itself. The proper fix is to stop when parent TC_H_ROOT is reached because the only way to retrieve ingress is when a hierarchy which does not contain a ffff: major handle call into qdisc_lookup with TC_H_MAJ(TC_H_ROOT). In the scenario where major ffff: is an egress qdisc in any of the tree levels, the updates will also propagate to TC_H_ROOT, which then the iteration must stop. net/sched/sch_api.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

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
20.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 12

VendorProductVersionRange
linuxlinux_kernel*≥2.6.25  –  <4.19.323
linuxlinux_kernel*≥4.20  –  <5.4.285
linuxlinux_kernel*≥5.5  –  <5.10.229
linuxlinux_kernel*≥5.11  –  <5.15.171
linuxlinux_kernel*≥5.16  –  <6.1.116
linuxlinux_kernel*≥6.2  –  <6.6.60
linuxlinux_kernel*≥6.7  –  <6.11.7
linuxlinux_kernel6.12any
linuxlinux_kernel6.12any
linuxlinux_kernel6.12any
linuxlinux_kernel6.12any
linuxlinux_kernel6.12any

References 13

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-265688.html
  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-355557.html
  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-398330.html
  • git.kernel.org https://git.kernel.org/stable/c/05df1b1dff8f197f1c275b57ccb2ca33021df552
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2e95c4384438adeaa772caa560244b1a2efef816
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/580b3189c1972aff0f993837567d36392e9d981b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/597cf9748c3477bf61bc35f0634129f56764ad24
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9995909615c3431a5304c1210face5f268d24dba
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ce691c814bc7a3c30c220ffb5b7422715458fd9b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dbe778b08b5101df9e89bc06e0a3a7ecd2f4ef20
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e7f9a6f97eb067599a74f3bcb6761976b0ed303e
    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/05df1b1dff8f197f1c275b57ccb2ca33021df552
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2e95c4384438adeaa772caa560244b1a2efef816
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/580b3189c1972aff0f993837567d36392e9d981b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/597cf9748c3477bf61bc35f0634129f56764ad24
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9995909615c3431a5304c1210face5f268d24dba
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ce691c814bc7a3c30c220ffb5b7422715458fd9b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/dbe778b08b5101df9e89bc06e0a3a7ecd2f4ef20
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e7f9a6f97eb067599a74f3bcb6761976b0ed303e
    Patch