CVE-2023-52483
published 2024-02-29CVE-2023-52483: In the Linux kernel, the following vulnerability has been resolved: mctp: perform route lookups under a RCU read-side lock Our current route lookups…
PriorityP339high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.23%
14.1th percentile
In the Linux kernel, the following vulnerability has been resolved:
mctp: perform route lookups under a RCU read-side lock
Our current route lookups (mctp_route_lookup and mctp_route_lookup_null)
traverse the net's route list without the RCU read lock held. This means
the route lookup is subject to preemption, resulting in an potential
grace period expiry, and so an eventual kfree() while we still have the
route pointer.
Add the proper read-side critical section locks around the route
lookups, preventing premption and a possible parallel kfree.
The remaining net->mctp.routes accesses are already under a
rcu_read_lock, or protected by the RTNL for updates.
Based on an analysis from Sili Luo , where
introducing a delay in the route lookup could cause a UAF on
simultaneous sendmsg() and route deletion.
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.64-1 (bookworm) | linux 6.1.64-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 889b7da23abf92faf34491df95733bda63639e32 < 6c52b12159049046483fdb0c411a0a1869c41a67 | 6c52b12159049046483fdb0c411a0a1869c41a67 |
| linux | linux | >= 889b7da23abf92faf34491df95733bda63639e32 < 1db0724a01b558feb1ecae551782add1951a114a | 1db0724a01b558feb1ecae551782add1951a114a |
| linux | linux | >= 889b7da23abf92faf34491df95733bda63639e32 < 2405f64a95a7a094eb24cba9bcfaffd1ea264de4 | 2405f64a95a7a094eb24cba9bcfaffd1ea264de4 |
| linux | linux | >= 889b7da23abf92faf34491df95733bda63639e32 < 5093bbfc10ab6636b32728e35813cbd79feb063c | 5093bbfc10ab6636b32728e35813cbd79feb063c |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 6.1.64-1 | 6.1.64-1 |
| linux | linux_kernel | >= 0 < 6.5.8-1 | 6.5.8-1 |
| linux | linux_kernel | >= 0 < 6.5.8-1 | 6.5.8-1 |
| linux | linux_kernel | >= 5.15 < 5.15.137 | 5.15.137 |
| linux | linux_kernel | >= 5.16 < 6.1.59 | 6.1.59 |
| linux | linux_kernel | >= 6.2 < 6.5.8 | 6.5.8 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
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Red Hat
kernel: mctp: perform route lookups under a RCU read-side lock
vendor_redhat·2024-02-29·CVSS 7.8
CVE-2023-52483 [HIGH] CWE-416 kernel: mctp: perform route lookups under a RCU read-side lock
kernel: mctp: perform route lookups under a RCU read-side lock
In the Linux kernel, the following vulnerability has been resolved:
mctp: perform route lookups under a RCU read-side lock
Our current route lookups (mctp_route_lookup and mctp_route_lookup_null)
traverse the net's route list without the RCU read lock held. This means
the route lookup is subject to preemption, resulting in an potential
grace period expiry, and so an eventual kfree() while we still have the
route pointer.
Add the proper read-side critical section locks around the route
lookups, preventing premption and a possible parallel kfree.
The remaining net->mctp.routes accesses are already under a
rcu_read_lock, or protected by the RTNL for updates.
Based on an analysis from Sili Luo , where
introducing a delay in the ro
Debian
CVE-2023-52483: linux - In the Linux kernel, the following vulnerability has been resolved: mctp: perfo...
vendor_debian·2023·CVSS 7.8
CVE-2023-52483 [HIGH] CVE-2023-52483: linux - In the Linux kernel, the following vulnerability has been resolved: mctp: perfo...
In the Linux kernel, the following vulnerability has been resolved: mctp: perform route lookups under a RCU read-side lock Our current route lookups (mctp_route_lookup and mctp_route_lookup_null) traverse the net's route list without the RCU read lock held. This means the route lookup is subject to preemption, resulting in an potential grace period expiry, and so an eventual kfree() while we still have the route pointer. Add the proper read-side critical section locks around the route lookups, preventing premption and a possible parallel kfree. The remaining net->mctp.routes accesses are already under a rcu_read_lock, or protected by the RTNL for updates. Based on an analysis from Sili Luo , where introducing a delay in the route lookup could cause a UAF on simultaneous sendmsg() and route
GHSA
GHSA-p8h7-jc93-wgq3: In the Linux kernel, the following vulnerability has been resolved:
mctp: perform route lookups under a RCU read-side lock
Our current route lookups
ghsa_unreviewed·2024-02-29
CVE-2023-52483 [HIGH] CWE-416 GHSA-p8h7-jc93-wgq3: In the Linux kernel, the following vulnerability has been resolved:
mctp: perform route lookups under a RCU read-side lock
Our current route lookups
In the Linux kernel, the following vulnerability has been resolved:
mctp: perform route lookups under a RCU read-side lock
Our current route lookups (mctp_route_lookup and mctp_route_lookup_null)
traverse the net's route list without the RCU read lock held. This means
the route lookup is subject to preemption, resulting in an potential
grace period expiry, and so an eventual kfree() while we still have the
route pointer.
Add the proper read-side critical section locks around the route
lookups, preventing premption and a possible parallel kfree.
The remaining net->mctp.routes accesses are already under a
rcu_read_lock, or protected by the RTNL for updates.
Based on an analysis from Sili Luo , where
introducing a delay in the route lookup could cause a UAF on
simultaneous sendmsg() and
OSV
CVE-2023-52483: In the Linux kernel, the following vulnerability has been resolved: mctp: perform route lookups under a RCU read-side lock Our current route lookups (
osv·2024-02-29·CVSS 7.8
CVE-2023-52483 [HIGH] CVE-2023-52483: In the Linux kernel, the following vulnerability has been resolved: mctp: perform route lookups under a RCU read-side lock Our current route lookups (
In the Linux kernel, the following vulnerability has been resolved: mctp: perform route lookups under a RCU read-side lock Our current route lookups (mctp_route_lookup and mctp_route_lookup_null) traverse the net's route list without the RCU read lock held. This means the route lookup is subject to preemption, resulting in an potential grace period expiry, and so an eventual kfree() while we still have the route pointer. Add the proper read-side critical section locks around the route lookups, preventing premption and a possible parallel kfree. The remaining net->mctp.routes accesses are already under a rcu_read_lock, or protected by the RTNL for updates. Based on an analysis from Sili Luo , where introducing a delay in the route lookup could cause a UAF on simultaneous sendmsg() and route
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/1db0724a01b558feb1ecae551782add1951a114ahttps://git.kernel.org/stable/c/2405f64a95a7a094eb24cba9bcfaffd1ea264de4https://git.kernel.org/stable/c/5093bbfc10ab6636b32728e35813cbd79feb063chttps://git.kernel.org/stable/c/6c52b12159049046483fdb0c411a0a1869c41a67https://git.kernel.org/stable/c/1db0724a01b558feb1ecae551782add1951a114ahttps://git.kernel.org/stable/c/2405f64a95a7a094eb24cba9bcfaffd1ea264de4https://git.kernel.org/stable/c/5093bbfc10ab6636b32728e35813cbd79feb063chttps://git.kernel.org/stable/c/6c52b12159049046483fdb0c411a0a1869c41a67
2024-02-29
Published