CVE-2024-26957 — Use After Free in Linux

CWE-416 — Use After Free42 documents7 sources
Severity
7.8HIGHNVD
OSV7.0OSV5.5
EPSS
0.0%
top 95.88%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
LinuxLinux KernelDebian Linux+1 more
Timeline
PublishedMay 1
Latest updateSep 18

Description

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: fix reference counting on zcrypt card objects Tests with hot-plugging crytpo cards on KVM guests with debug kernel build revealed an use after free for the load field of the struct zcrypt_card. The reason was an incorrect reference handling of the zcrypt card object which could lead to a free of the zcrypt card object while it was still in use. This is an example of the slab message: kernel: 0x00000000885a7512-0…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages5 packages

▶NVDlinux/linux_kernel4.20 — 5.4.274+7
▶Debianlinux/linux_kernel< 5.10.216-1+3
▶Ubuntulinux/linux_kernel< 5.4.0-189.209+2
▶CVEListV5linux/linuxe28d2af43614eb86f59812e7221735fc221bbc10 — 7e500849fa558879a1cde43f80c7c048c2437058+9
▶debiandebian/linux< linux 6.1.85-1 (bookworm)

Also affects: Debian Linux 10.0

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

20
OSV
linux-xilinx-zynqmp vulnerabilities↗2024-09-18
▶
OSV
linux-gcp-5.15 vulnerabilities↗2024-07-30
▶
OSV
linux-raspi vulnerabilities↗2024-07-26
▶
OSV
linux-azure, linux-azure-5.15, linux-azure-fde, linux-azure-fde-5.15 vulnerabilities↗2024-07-26
▶
OSV
linux-aws-5.15 vulnerabilities↗2024-07-23
▶

📋Vendor Advisories

20
Ubuntu
Linux kernel vulnerabilities↗2024-09-18
▶
Ubuntu
Linux kernel vulnerabilities↗2024-07-30
▶
Ubuntu
Linux kernel vulnerabilities↗2024-07-26
▶
Ubuntu
Linux kernel vulnerabilities↗2024-07-26
▶
Ubuntu
Linux kernel vulnerabilities↗2024-07-23
▶

💬Community

1
Bugzilla
CVE-2024-26957 kernel: s390/zcrypt: fix reference counting on zcrypt card objects↗2024-05-01
▶