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Fencer Vulns
critical 9.8

CVE-2024-26582 in the critical feed json

net: tls: fix use-after-free with partial reads and async decrypt

published 2024-02-21 2 y ago modified 2026-08-05 3 mo ago also EUVD-2024-23844

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits
0
none known

Summary

In the Linux kernel, the following vulnerability has been resolved:

net: tls: fix use-after-free with partial reads and async decrypt

tls_decrypt_sg doesn't take a reference on the pages from clear_skb, so the put_page() in tls_decrypt_done releases them, and we trigger a use-after-free in process_rx_list when we try to read from the partially-read skb.

Patch / fix

  • Linux Linux 6.1.79, 6.6.18, 6.7.6, 6.8
  • linux Debian 12 6.1.82-1
  • linux Debian 14, Debian 13 6.7.7-1

debian advisories DEBIAN-CVE-2024-26582

  • linux-gcp-6.5 Ubuntu 22.04 LTS 6.5.0-1022.24~22.04.1
  • linux-hwe-6.5 Ubuntu 22.04 LTS 6.5.0-41.41~22.04.2
  • linux-oem-6.5 Ubuntu 22.04 LTS 6.5.0-1024.25
  • linux-azure-6.5 Ubuntu 22.04 LTS 6.5.0-1022.23~22.04.1
  • linux-riscv-6.5 Ubuntu 22.04 LTS 6.5.0-40.40.1~22.04.1
  • linux-nvidia-6.5 Ubuntu 22.04 LTS 6.5.0-1021.22
  • linux-oracle-6.5 Ubuntu 22.04 LTS 6.5.0-1024.24~22.04.1
  • linux-starfive-6.5 Ubuntu 22.04 LTS 6.5.0-1015.16~22.04.1

ubuntu advisories UBUNTU-CVE-2024-26582

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel RHEL 9 5.14.0-427.13.1.el9_4
  • rv RHEL 9 5.14.0-427.13.1.el9_4
  • perf RHEL 9 5.14.0-427.13.1.el9_4
  • rtla RHEL 9 5.14.0-427.13.1.el9_4
  • bpftool RHEL 9 7.3.0-427.13.1.el9_4
  • libperf RHEL 9 5.14.0-427.13.1.el9_4
  • kernel-rt RHEL 9 5.14.0-427.13.1.el9_4
  • kernel-64k RHEL 9 5.14.0-427.13.1.el9_4

red hat advisories RHSA-2024:2394RHSA-2024:1881RHSA-2024:1882

  • kernel-rt Linux Micro 6.0 6.4.0-9.1
  • kernel-source-rt Linux Micro 6.0 6.4.0-9.1

suse advisories SUSE-SU-2025:20028-1

  • kernel AlmaLinux 9 5.14.0-427.13.1.el9_4
  • rv AlmaLinux 9 5.14.0-427.13.1.el9_4
  • perf AlmaLinux 9 5.14.0-427.13.1.el9_4
  • rtla AlmaLinux 9 5.14.0-427.13.1.el9_4
  • bpftool AlmaLinux 9 7.3.0-427.13.1.el9_4
  • libperf AlmaLinux 9 5.14.0-427.13.1.el9_4
  • kernel-rt AlmaLinux 9 5.14.0-427.13.1.el9_4
  • kernel-64k AlmaLinux 9 5.14.0-427.13.1.el9_4

almalinux advisories ALSA-2024:2394

  • kernel Azure Linux 3.0 6.6.22.1-2

azure linux advisories AZL-35798

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-26582 updated cvss 5.8

kernel: tls: use-after-free with partial reads and async decrypt

  • Red Hat Enterprise Linux 9 kernel-rt, kernel-rt-kvm, kernel-rt-core, kernel-rt-modules, kernel-rt-debug-kvm, kernel-rt-debug-core, +12 more
    affected: workaround, no fix available “No current mitigation is available for this vulnerability. Please make sure to have kernel up-to-date as soon as the patches are available to make sure the flaw mitigated.”
  • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-debuginfo-common-s390x 5.14.0-284.62.1.el9_2, kernel-debuginfo-common-x86_64 5.14.0-284.62.1.el9_2, kernel-debuginfo-common-aarch64 5.14.0-284.62.1.el9_2, kernel-debuginfo-common-ppc64le 5.14.0-284.62.1.el9_2
    fixed: vendor fix “No current mitigation is available for this vulnerability. Please make sure to have kernel up-to-date as soon as the patches are available to make sure the flaw mitigated.” RHSA-2024:1881
  • Red Hat Enterprise Linux AppStream (v. 9) rv 5.14.0-427.13.1.el9_4, perf 5.14.0-427.13.1.el9_4, rtla 5.14.0-427.13.1.el9_4, kernel-devel-matched 5.14.0-427.13.1.el9_4, kernel-64k-devel-matched 5.14.0-427.13.1.el9_4, kernel-debug-devel-matched 5.14.0-427.13.1.el9_4, +6 more
    fixed: vendor fix “No current mitigation is available for this vulnerability. Please make sure to have kernel up-to-date as soon as the patches are available to make sure the flaw mitigated.” RHSA-2024:2394
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) perf 5.14.0-284.62.1.el9_2, rtla 5.14.0-284.62.1.el9_2, kernel-devel-matched 5.14.0-284.62.1.el9_2, kernel-64k-devel-matched 5.14.0-284.62.1.el9_2, kernel-debug-devel-matched 5.14.0-284.62.1.el9_2, kernel-debuginfo-common-s390x 5.14.0-284.62.1.el9_2, +5 more
    fixed: vendor fix “No current mitigation is available for this vulnerability. Please make sure to have kernel up-to-date as soon as the patches are available to make sure the flaw mitigated.” RHSA-2024:1881
  • Red Hat Enterprise Linux BaseOS (v. 9) bpftool 7.3.0-427.13.1.el9_4, kernel 5.14.0-427.13.1.el9_4, kernel-64k 5.14.0-427.13.1.el9_4, kernel-core 5.14.0-427.13.1.el9_4, kernel-tools 5.14.0-427.13.1.el9_4, python3-perf 5.14.0-427.13.1.el9_4, +28 more
    fixed: vendor fix “No current mitigation is available for this vulnerability. Please make sure to have kernel up-to-date as soon as the patches are available to make sure the flaw mitigated.” RHSA-2024:2394
  • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool 7.0.0-284.62.1.el9_2, kernel 5.14.0-284.62.1.el9_2, kernel-64k 5.14.0-284.62.1.el9_2, kernel-core 5.14.0-284.62.1.el9_2, kernel-tools 5.14.0-284.62.1.el9_2, python3-perf 5.14.0-284.62.1.el9_2, +28 more
    fixed: vendor fix “No current mitigation is available for this vulnerability. Please make sure to have kernel up-to-date as soon as the patches are available to make sure the flaw mitigated.” RHSA-2024:1881
  • Red Hat Enterprise Linux CRB (v. 9) libperf 5.14.0-427.13.1.el9_4, kernel-debuginfo-common-s390x 5.14.0-427.13.1.el9_4, kernel-debuginfo-common-x86_64 5.14.0-427.13.1.el9_4, kernel-debuginfo-common-aarch64 5.14.0-427.13.1.el9_4, kernel-debuginfo-common-ppc64le 5.14.0-427.13.1.el9_4 Red Hat Enterprise Linux NFV (v. 9) kernel-rt 5.14.0-427.13.1.el9_4, kernel-rt-kvm 5.14.0-427.13.1.el9_4, kernel-rt-core 5.14.0-427.13.1.el9_4, kernel-rt-modules 5.14.0-427.13.1.el9_4, kernel-rt-debug-kvm 5.14.0-427.13.1.el9_4, kernel-rt-debug-core 5.14.0-427.13.1.el9_4, +6 more
    fixed: vendor fix “No current mitigation is available for this vulnerability. Please make sure to have kernel up-to-date as soon as the patches are available to make sure the flaw mitigated.” RHSA-2024:2394
  • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt 5.14.0-284.62.1.rt14.347.el9_2, kernel-rt-core 5.14.0-284.62.1.rt14.347.el9_2, kernel-rt-modules 5.14.0-284.62.1.rt14.347.el9_2, kernel-rt-debug-core 5.14.0-284.62.1.rt14.347.el9_2, kernel-rt-modules-core 5.14.0-284.62.1.rt14.347.el9_2, kernel-rt-debug-modules 5.14.0-284.62.1.rt14.347.el9_2, +4 more Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt 5.14.0-284.62.1.rt14.347.el9_2, kernel-rt-kvm 5.14.0-284.62.1.rt14.347.el9_2, kernel-rt-core 5.14.0-284.62.1.rt14.347.el9_2, kernel-rt-modules 5.14.0-284.62.1.rt14.347.el9_2, kernel-rt-debug-kvm 5.14.0-284.62.1.rt14.347.el9_2, kernel-rt-debug-core 5.14.0-284.62.1.rt14.347.el9_2, +6 more
    fixed: vendor fix “No current mitigation is available for this vulnerability. Please make sure to have kernel up-to-date as soon as the patches are available to make sure the flaw mitigated.” RHSA-2024:1882
show 2 more
  • Red Hat Enterprise Linux RT (v. 9) kernel-rt 5.14.0-427.13.1.el9_4, kernel-rt-core 5.14.0-427.13.1.el9_4, kernel-rt-modules 5.14.0-427.13.1.el9_4, kernel-rt-debug-core 5.14.0-427.13.1.el9_4, kernel-rt-modules-core 5.14.0-427.13.1.el9_4, kernel-rt-debug-modules 5.14.0-427.13.1.el9_4, +4 more
    fixed: vendor fix “No current mitigation is available for this vulnerability. Please make sure to have kernel up-to-date as soon as the patches are available to make sure the flaw mitigated.” RHSA-2024:2394
  • Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-doc 5.14.0-284.62.1.el9_2
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.71% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Linux Linux

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.