-

CVE-2023-53600

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

tunnels: fix kasan splat when generating ipv4 pmtu error

If we try to emit an icmp error in response to a nonliner skb, we get

BUG: KASAN: slab-out-of-bounds in ip_compute_csum+0x134/0x220
Read of size 4 at addr ffff88811c50db00 by task iperf3/1691
CPU: 2 PID: 1691 Comm: iperf3 Not tainted 6.5.0-rc3+ #309
[..]
 kasan_report+0x105/0x140
 ip_compute_csum+0x134/0x220
 iptunnel_pmtud_build_icmp+0x554/0x1020
 skb_tunnel_check_pmtu+0x513/0xb80
 vxlan_xmit_one+0x139e/0x2ef0
 vxlan_xmit+0x1867/0x2760
 dev_hard_start_xmit+0x1ee/0x4f0
 br_dev_queue_push_xmit+0x4d1/0x660
 [..]

ip_compute_csum() cannot deal with nonlinear skbs, so avoid it.
After this change, splat is gone and iperf3 is no longer stuck.

Verknüpft mit AI von unstrukturierten Daten zu bestehenden CPE der NVD
This information is available to logged-in users.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
VendorLinux
≫
Product Linux
Default Statusunaffected
Version < 5850c391fd7e25662334cb3cbf29a62bcbff1084
Version 4cb47a8644cc9eb8ec81190a50e79e6530d0297f
Status affected
Version < e95808121953410db8c59f0abfde70ac0d34222c
Version 4cb47a8644cc9eb8ec81190a50e79e6530d0297f
Status affected
Version < da5f42a6e7485fbb7a6dbd6a2b3045e19e4df5cc
Version 4cb47a8644cc9eb8ec81190a50e79e6530d0297f
Status affected
Version < fe6a9f7516735be9fdabab00e47ef7a3403a174d
Version 4cb47a8644cc9eb8ec81190a50e79e6530d0297f
Status affected
Version < 6a7ac3d20593865209dceb554d8b3f094c6bd940
Version 4cb47a8644cc9eb8ec81190a50e79e6530d0297f
Status affected
VendorLinux
≫
Product Linux
Default Statusaffected
Version 5.9
Status affected
Version < 5.9
Version 0
Status unaffected
Version <= 5.10.*
Version 5.10.191
Status unaffected
Version <= 5.15.*
Version 5.15.127
Status unaffected
Version <= 6.1.*
Version 6.1.46
Status unaffected
Version <= 6.4.*
Version 6.4.11
Status unaffected
Version <= *
Version 6.5
Status unaffected
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.02% 0.033
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string