Description
In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Reject oversized XDomain properties responses tb_xdp_properties_request() allocates room for 45 data dwords in its 252-byte response buffer. The XDomain length field is six bits wide, however, and a malicious peer can set it to 63. After the fixed response fields are subtracted, the driver treats this as 48 data dwords. Commit 322e93448d90 ("thunderbolt: Clamp XDomain response data copy to allocation size") only bounds the copy against data_len. If data_len is at least 48, memcpy() reads 192 bytes from the 180-byte res->data array, causing a 12-byte heap out-of-bounds read. Commit 4db2bd2ed478 ("thunderbolt: Limit XDomain response copy to actual frame size") limits the earlier copy but does not constrain this header-derived length. Reject response data lengths that exceed the allocated source buffer before copying them into the assembled property block.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
d1ff70241a275133e1a0258b7c23588b122276c8 to < 9fba032802b5858bc6186b34f8e966429ff155abaffectedd1ff70241a275133e1a0258b7c23588b122276c8 to < 7c028d2ae85eca86b82cab1163a9ac1187a2e666affectedd1ff70241a275133e1a0258b7c23588b122276c8 to < 37ea4304bd9f57ebe719409f010915495467f05caffectedd1ff70241a275133e1a0258b7c23588b122276c8 to < b270c1074860de74da0d6b5250fb06b359b9d509affectedd1ff70241a275133e1a0258b7c23588b122276c8 to < a766a86ff48acee76aeb8e2575771040749e509daffectedd1ff70241a275133e1a0258b7c23588b122276c8 to < 2f97f929dad9eb3e1f63b721d2dd49bf9bc68efaaffectedd1ff70241a275133e1a0258b7c23588b122276c8 to < 737a1d2e9642d5f718bd29aa4a98b9eef3832f0aaffectedd1ff70241a275133e1a0258b7c23588b122276c8 to < 80756e263846ab694984e749e8c626897331438faffected
Linux Linux
Default version status: affected
4.15affected0 to < 4.15unaffected5.10.273 to ≤ 5.10.*unaffected5.15.224 to ≤ 5.15.*unaffected6.1.191 to ≤ 6.1.*unaffected6.6.160 to ≤ 6.6.*unaffected6.12.113 to ≤ 6.12.*unaffected6.18.56 to ≤ 6.18.*unaffected7.2.10 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/9fba032802b5858bc6186b34f8e966429ff155ab ↗
- https://git.kernel.org/stable/c/7c028d2ae85eca86b82cab1163a9ac1187a2e666 ↗
- https://git.kernel.org/stable/c/37ea4304bd9f57ebe719409f010915495467f05c ↗
- https://git.kernel.org/stable/c/b270c1074860de74da0d6b5250fb06b359b9d509 ↗
- https://git.kernel.org/stable/c/a766a86ff48acee76aeb8e2575771040749e509d ↗
- https://git.kernel.org/stable/c/2f97f929dad9eb3e1f63b721d2dd49bf9bc68efa ↗
- https://git.kernel.org/stable/c/737a1d2e9642d5f718bd29aa4a98b9eef3832f0a ↗
- https://git.kernel.org/stable/c/80756e263846ab694984e749e8c626897331438f ↗