Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser The Information Element (IE) parser rtw_get_ie() trusted the length byte of each IE without validating that the IE body (len bytes after the 2-byte header) fits inside the remaining frame buffer. A malformed frame can advertise an IE length larger than the available data, causing the parser to increment its pointer beyond the buffer end. This results in out-of-bounds reads or, depending on the pattern, an infinite loop. Fix by validating that (offset + 2 + len) does not exceed the limit before accepting the IE or advancing to the next element. This prevents OOB reads and ensures the parser terminates safely on malformed frames.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b before 9829c6e1b2e4180fd18315252ad6faeab6128076; affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b before b977eb31802817f4a37da95bf16bfdaa1eeb5fc2; affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b before 30c558447e90935f0de61be181bbcedf75952e00; affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b before a54e2b2db1b7de2e008b4f62eec35aaefcc663c5; affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b before df191dd9f4c7249d98ada55634fa8ac19089b8cb; affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b before c0d93d69e1472ba75b78898979b90a98ba2a2501; affected 554c0a3abf216c991c5ebddcdb2c08689ecd290b before 154828bf9559b9c8421fc2f0d7f7f76b3683aaed |
| Linux / Linux | affected 4.12; unaffected 0 before 4.12; unaffected 5.15.203 through 5.15.*; unaffected 6.1.160 through 6.1.*; unaffected 6.6.120 through 6.6.*; unaffected 6.12.62 through 6.12.*; unaffected 6.17.12 through 6.17.*; unaffected 6.18.1 through 6.18.*; unaffected 6.19 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/9829c6e1b2e4180fd18315252ad6faeab6128076
- https://git.kernel.org/stable/c/b977eb31802817f4a37da95bf16bfdaa1eeb5fc2
- https://git.kernel.org/stable/c/30c558447e90935f0de61be181bbcedf75952e00
- https://git.kernel.org/stable/c/a54e2b2db1b7de2e008b4f62eec35aaefcc663c5
- https://git.kernel.org/stable/c/df191dd9f4c7249d98ada55634fa8ac19089b8cb
- https://git.kernel.org/stable/c/c0d93d69e1472ba75b78898979b90a98ba2a2501
- https://git.kernel.org/stable/c/154828bf9559b9c8421fc2f0d7f7f76b3683aaed