CVE-2024-49883 — Use After Free in Linux

CWE-416 — Use After Free90 documents8 sources
Severity
7.8HIGHNVD
OSV8.8OSV6.7OSV6.3OSV5.5OSV4.7
EPSS
0.0%
top 98.42%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
12
LinuxLinux KernelDebian Linux+9 more
Timeline
PublishedOct 21
Latest updateAug 18

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: aovid use-after-free in ext4_ext_insert_extent() As Ojaswin mentioned in Link, in ext4_ext_insert_extent(), if the path is reallocated in ext4_ext_create_new_leaf(), we'll use the stale path and cause UAF. Below is a sample trace with dummy values: ext4_ext_insert_extent path = *ppath = 2000 ext4_ext_create_new_leaf(ppath) ext4_find_extent(ppath) path = *ppath = 2000 if (depth > path[0].p_maxdepth) kfree(path = 2000); *…

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 Packages14 packages

▶NVDlinux/linux_kernel3.18 — 5.10.227+5
▶Debianlinux/linux_kernel< 5.10.234-1+3
▶Ubuntulinux/linux_kernel< 5.4.0-208.228+5

Patches

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

🔴Vulnerability Details

43
OSV
linux-oracle vulnerabilities↗2025-08-13
▶
OSV
linux-azure vulnerabilities↗2025-08-05
▶
OSV
linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-hwe, linux-kvm vulnerabilities↗2025-08-05
▶
OSV
linux-oracle vulnerabilities↗2025-08-05
▶
OSV
linux-aws-fips, linux-azure-fips, linux-fips, linux-gcp-fips vulnerabilities↗2025-08-05
▶

📋Vendor Advisories

46
Ubuntu
Kernel Live Patch Security Notice↗2025-08-18
▶
CISA ICS
Siemens Third-Party Components in SINEC OS↗2025-08-14
▶
Ubuntu
Linux kernel (Oracle) vulnerabilities↗2025-08-13
▶
Ubuntu
Linux kernel (Oracle) vulnerabilities↗2025-08-05
▶
Ubuntu
Linux kernel vulnerabilities↗2025-08-05
▶
CVE-2024-49883 — Use After Free in Linux | cvebase