Linux vulnerability

What happened

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible UAF in icmpv6_rcv() Caching saddr and daddr before pskb_pull() is problematic since skb->head can change. Remove these temporary variables: - We only access &ipv6_hdr(skb)->saddr and &ipv6_hdr(skb)->daddr when net_dbg_ratelimited() is called in the slow path. - Avoid potential future misuse after pskb_pull() call.

Affected versions

Linux: 4b3418fba0fe819197e3359d5ddbef84ba2c59de through before 7bff2c8fe5c35ae58bf73104f53db3676e6e5d94 (git); 4b3418fba0fe819197e3359d5ddbef84ba2c59de through before aff0f28f5be803de2452ce702631c021fcd9ce8a (git); 4b3418fba0fe819197e3359d5ddbef84ba2c59de through before 38bdbc897c0d83a3e2b925a51b69420f1feba29a (git); 4b3418fba0fe819197e3359d5ddbef84ba2c59de through before 0069813e6ca9309eca78022bcb3aeb1e9ef90a12 (git); 4b3418fba0fe819197e3359d5ddbef84ba2c59de through before 1e1f0f89ee4692a64be3f3707ff8ac1ae57b03e7 (git); 4b3418fba0fe819197e3359d5ddbef84ba2c59de through before 7c66b368c6ff453f99cb39d84af93e908e51eef2 (git); 4b3418fba0fe819197e3359d5ddbef84ba2c59de through before 085e31a811ef234ef8c3e219c4636dfebfe7e10f (git); 4b3418fba0fe819197e3359d5ddbef84ba2c59de through before f996edd7615e686ada141b7f3395025729ff8ccb (git); 4.4; V3.1.6 through before * (custom) Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

• Apply vendor-provided updates or mitigations.
• Review affected product exposure and access logs.