Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: thunderbolt: property: Reject u32 wrap in tb_property_entry_valid() entry->value is u32 and entry->length is u16; the sum is performed in u32 and wraps. A malicious XDomain peer can pick value = 0xffffff00, length = 0x100 so the sum 0x100000000 wraps to 0 and passes the > block_len check. tb_property_parse() then passes entry->value to parse_dwdata() as a dword offset into the property block, reading attacker-directed memory far past the allocation. For TEXT-typed entries with the "deviceid" or "vendorid" keys this lands in xd->device_name / xd->vendor_name and is readable back via the per-XDomain device_name / vendor_name sysfs attributes; the leak is NUL-bounded (kstrdup() stops at the first zero byte) and untargeted (the attacker picks a delta, not an absolute address). DATA-typed entries are parsed into property->value.data but not generically surfaced to userspace. Use check_add_overflow() so a wrapped sum is rejected.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before 6a63623621639acbb39bc2d9fb09559681716695; affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before e8a0b0a93a6ef958e70b1dd4930beb6dc0026b36; affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before 9fee50c4e1e42f6d3cbe30df584f9f648f626071; affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before 8d4a758b407ab3de3be86d1ceadfa35d717d30c7; affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before 5c06a3043ad944f087bb2ae0aae28d820bb9f460; affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before 31b98e503ecca8077e5247253dd5425ab84bc96d; affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before a47784aee77f33f786dc5d7375db821bdae68792; affected cdae7c07e3e3509eaabc18c1640a55dc5b99c179 before 01deda0152066c6c955f0619114ea6afa070aaec |
| Linux / Linux | affected 4.15; unaffected 0 before 4.15; unaffected 5.10.259 through 5.10.*; unaffected 5.15.210 through 5.15.*; unaffected 6.1.176 through 6.1.*; unaffected 6.6.143 through 6.6.*; unaffected 6.12.93 through 6.12.*; unaffected 6.18.35 through 6.18.*; unaffected 7.0.12 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/6a63623621639acbb39bc2d9fb09559681716695
- https://git.kernel.org/stable/c/e8a0b0a93a6ef958e70b1dd4930beb6dc0026b36
- https://git.kernel.org/stable/c/9fee50c4e1e42f6d3cbe30df584f9f648f626071
- https://git.kernel.org/stable/c/8d4a758b407ab3de3be86d1ceadfa35d717d30c7
- https://git.kernel.org/stable/c/5c06a3043ad944f087bb2ae0aae28d820bb9f460
- https://git.kernel.org/stable/c/31b98e503ecca8077e5247253dd5425ab84bc96d
- https://git.kernel.org/stable/c/a47784aee77f33f786dc5d7375db821bdae68792
- https://git.kernel.org/stable/c/01deda0152066c6c955f0619114ea6afa070aaec
ADP enrichment
No English description supplied.
No references supplied.