Astra Linux – vulnerability in linux-6.1, linux-5.10, linux-5.15

In the Linux kernel, the following vulnerability has been resolved: ppp: fix memory leak in padcompressskb If allocskb fails in padcompressskb, it returns NULL without releasing the old skb. The caller does: skb = padcompressskbppp, skb; if !skb goto drop; drop: kfreeskbskb; When padcompressskb...

CVE-2025-39847 ppp: fix memory leak in pad_compress_skb

In the Linux kernel, the following vulnerability has been resolved: ppp: fix memory leak in padcompressskb If allocskb fails in padcompressskb, it returns NULL without releasing the old skb. The caller does: skb = padcompressskbppp, skb; if !skb goto drop; drop: kfreeskbskb; When padcompressskb...

CVE-2025-39847

CVE-2025-39847: In the Linux kernel, pad_compress_skb() can leak memory if alloc_skb() fails, as the old skb reference may be freed incorrectly at the caller. The fix aligns pad_compress_skb() semantics with realloc: free the old skb only after successful allocation and compression, and at the ca...