7.8

CVE-2023-53559

ip_vti: fix potential slab-use-after-free in decode_session6

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

ip_vti: fix potential slab-use-after-free in decode_session6

When ip_vti device is set to the qdisc of the sfb type, the cb field
of the sent skb may be modified during enqueuing. Then,
slab-use-after-free may occur when ip_vti device sends IPv6 packets.
As commit f855691975bb ("xfrm6: Fix the nexthdr offset in
_decode_session6.") showed, xfrm_decode_session was originally intended
only for the receive path. IP6CB(skb)->nhoff is not set during
transmission. Therefore, set the cb field in the skb to 0 before
sending packets.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 3.19.1 < 4.14.324
Linux ≫ Linux Kernel Version >= 4.15 < 4.19.293
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.255
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.192
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.128
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.47
Linux ≫ Linux Kernel Version >= 6.2 < 6.4.12
Linux ≫ Linux Kernel Version3.19 Update-
Linux ≫ Linux Kernel Version3.19 Updaterc7
Linux ≫ Linux Kernel Version6.5 Updaterc1
Linux ≫ Linux Kernel Version6.5 Updaterc2
Linux ≫ Linux Kernel Version6.5 Updaterc3
Linux ≫ Linux Kernel Version6.5 Updaterc4
Linux ≫ Linux Kernel Version6.5 Updaterc5
Linux ≫ Linux Kernel Version6.5 Updaterc6
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.02% 0.044
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.