🛡️ AZL-74841 — kernel

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

CVE-2025-39847 affecting package kernel for versions less than 5.15.200.1-1

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

ppp: fix memory leak in pad_compress_skb

If alloc_skb() fails in pad_compress_skb(), it returns NULL without

releasing the old skb. The caller does:

skb = pad_compress_skb(ppp, skb);

if (!skb)

goto drop;

drop:

kfree_skb(skb);

When pad_compress_skb() returns NULL, the reference to the old skb is

lost and kfree_skb(skb) ends up doing nothing, leading to a memory leak.

Align pad_compress_skb() semantics with realloc(): only free the old

skb if allocation and compression succeed. At the call site, use the

new_skb variable so the original skb is not lost when pad_compress_skb()

fails.

Affected software

AZL-74841 is recorded against 1 package.

  • kernel (fixed in 5.15.200.1-1)

Timeline and source

Published on 19 September 2025 and last revised on 21 April 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Web)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2025-09-19
Updated 2026-08-12
Modified 2026-04-21
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel — 5.15.200.1-1

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