Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: libceph: refresh auth->authorizer_buf{,_len} after authorizer update ceph_x_create_authorizer() caches au->buf->vec.iov_base and au->buf->vec.iov_len in struct ceph_auth_handshake. These cached values are then used by the messenger connect code when sending the authorizer. ceph_x_update_authorizer() can rebuild the authorizer when a newer service ticket is available. If the rebuilt authorizer no longer fits in the existing buffer, ceph_x_build_authorizer() drops its reference to au->buf and allocates a new one. If this is the final reference, ceph_buffer_put() frees the old ceph_buffer and its vec.iov_base, but auth->authorizer_buf still points at that freed memory. A subsequent msgr1 reconnect can therefore queue the stale pointer and trigger a KASAN slab-use-after-free in _copy_from_iter() while tcp_sendmsg() copies the authorizer. Refresh auth->authorizer_buf and auth->authorizer_buf_len after a successful authorizer rebuild so the messenger sends the current buffer.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 0bed9b5c523d577378b6f83eab5835fe30c27208 before 2334e9997308305ee4fd508fdfe6086c4150ed60; affected 0bed9b5c523d577378b6f83eab5835fe30c27208 before 79a273df64238a4ade8b709689a78589f755b8ef; affected 0bed9b5c523d577378b6f83eab5835fe30c27208 before 26f814187abceee90dbb29a02133adb4786fbb13; affected 0bed9b5c523d577378b6f83eab5835fe30c27208 before 9d37aec9ffe4e743dabc3f84502e9723e17a30d4; affected 0bed9b5c523d577378b6f83eab5835fe30c27208 before 75e82e8944ac1efe9fdb88bd2f14d9a031282bdf; affected 0bed9b5c523d577378b6f83eab5835fe30c27208 before 0060ec912292a550198d8d18ac95b433c92a7091; affected 0bed9b5c523d577378b6f83eab5835fe30c27208 before 5ecfcd5c05866f185357700b81b461dae4f5ebb2; affected 0bed9b5c523d577378b6f83eab5835fe30c27208 before 937d61f86d377a3aa578adae7a3dfcecdddf9d89; affected 29c65a277a64645af853e8c9a9b3dda0ddc421e0; affected d2c7223497cf8228416c70e3f4238ddd6c5bdf3c; affected 3.4.50 before 3.5; affected 3.9.7 before 3.10 |
| Linux / Linux | affected 3.10; unaffected 0 before 3.10; unaffected 5.10.265 through 5.10.*; unaffected 5.15.216 through 5.15.*; unaffected 6.1.183 through 6.1.*; unaffected 6.6.148 through 6.6.*; unaffected 6.12.101 through 6.12.*; unaffected 6.18.42 through 6.18.*; unaffected 7.1.6 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/2334e9997308305ee4fd508fdfe6086c4150ed60
- https://git.kernel.org/stable/c/79a273df64238a4ade8b709689a78589f755b8ef
- https://git.kernel.org/stable/c/26f814187abceee90dbb29a02133adb4786fbb13
- https://git.kernel.org/stable/c/9d37aec9ffe4e743dabc3f84502e9723e17a30d4
- https://git.kernel.org/stable/c/75e82e8944ac1efe9fdb88bd2f14d9a031282bdf
- https://git.kernel.org/stable/c/0060ec912292a550198d8d18ac95b433c92a7091
- https://git.kernel.org/stable/c/5ecfcd5c05866f185357700b81b461dae4f5ebb2
- https://git.kernel.org/stable/c/937d61f86d377a3aa578adae7a3dfcecdddf9d89
ADP enrichment
No English description supplied.
No references supplied.