CVE-2022-49873
published 2025-05-01CVE-2022-49873: In the Linux kernel, the following vulnerability has been resolved: bpf: Fix wrong reg type conversion in release_reference() Some helper functions will…
PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.20%
10.5th percentile
In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix wrong reg type conversion in release_reference()
Some helper functions will allocate memory. To avoid memory leaks, the
verifier requires the eBPF program to release these memories by calling
the corresponding helper functions.
When a resource is released, all pointer registers corresponding to the
resource should be invalidated. The verifier use release_references() to
do this job, by apply __mark_reg_unknown() to each relevant register.
It will give these registers the type of SCALAR_VALUE. A register that
will contain a pointer value at runtime, but of type SCALAR_VALUE, which
may allow the unprivileged user to get a kernel pointer by storing this
register into a map.
Using __mark_reg_not_init() while NOT allow_ptr_leaks can mitigate this
problem.
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.0.10-1 (bookworm) | linux 6.0.10-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= fd978bf7fd312581a7ca454a991f0ffb34c4204b < cedd4f01f67be94735f15123158f485028571037 | cedd4f01f67be94735f15123158f485028571037 |
| linux | linux | >= fd978bf7fd312581a7ca454a991f0ffb34c4204b < 466ce46f251dfb259a8cbaa895ab9edd6fb56240 | 466ce46f251dfb259a8cbaa895ab9edd6fb56240 |
| linux | linux | >= fd978bf7fd312581a7ca454a991f0ffb34c4204b < ae5ccad6c711db0f2ca1231be051935dd128b8f5 | ae5ccad6c711db0f2ca1231be051935dd128b8f5 |
| linux | linux | >= fd978bf7fd312581a7ca454a991f0ffb34c4204b < f1db20814af532f85e091231223e5e4818e8464b | f1db20814af532f85e091231223e5e4818e8464b |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.158-1 | 5.10.158-1 |
| linux | linux_kernel | >= 0 < 6.0.10-1 | 6.0.10-1 |
| linux | linux_kernel | >= 0 < 6.0.10-1 | 6.0.10-1 |
| linux | linux_kernel | >= 0 < 6.0.10-1 | 6.0.10-1 |
| linux | linux_kernel | >= 4.20 < 5.10.155 | 5.10.155 |
| linux | linux_kernel | >= 5.11 < 5.15.79 | 5.15.79 |
| linux | linux_kernel | >= 5.16 < 6.0.9 | 6.0.9 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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Red Hat
kernel: bpf: Fix wrong reg type conversion in release_reference()
vendor_redhat·2025-05-01·CVSS 5.5
CVE-2022-49873 [MEDIUM] CWE-704 kernel: bpf: Fix wrong reg type conversion in release_reference()
kernel: bpf: Fix wrong reg type conversion in release_reference()
In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix wrong reg type conversion in release_reference()
Some helper functions will allocate memory. To avoid memory leaks, the
verifier requires the eBPF program to release these memories by calling
the corresponding helper functions.
When a resource is released, all pointer registers corresponding to the
resource should be invalidated. The verifier use release_references() to
do this job, by apply __mark_reg_unknown() to each relevant register.
It will give these registers the type of SCALAR_VALUE. A register that
will contain a pointer value at runtime, but of type SCALAR_VALUE, which
may allow the unprivileged user to get a kernel pointer by storing th
Debian
CVE-2022-49873: linux - In the Linux kernel, the following vulnerability has been resolved: bpf: Fix wr...
vendor_debian·2022·CVSS 5.5
CVE-2022-49873 [MEDIUM] CVE-2022-49873: linux - In the Linux kernel, the following vulnerability has been resolved: bpf: Fix wr...
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix wrong reg type conversion in release_reference() Some helper functions will allocate memory. To avoid memory leaks, the verifier requires the eBPF program to release these memories by calling the corresponding helper functions. When a resource is released, all pointer registers corresponding to the resource should be invalidated. The verifier use release_references() to do this job, by apply __mark_reg_unknown() to each relevant register. It will give these registers the type of SCALAR_VALUE. A register that will contain a pointer value at runtime, but of type SCALAR_VALUE, which may allow the unprivileged user to get a kernel pointer by storing this register into a map. Using __mark_reg_not_init() while NOT allow
OSV
CVE-2022-49873: In the Linux kernel, the following vulnerability has been resolved: bpf: Fix wrong reg type conversion in release_reference() Some helper functions wi
osv·2025-05-01·CVSS 5.5
CVE-2022-49873 [MEDIUM] CVE-2022-49873: In the Linux kernel, the following vulnerability has been resolved: bpf: Fix wrong reg type conversion in release_reference() Some helper functions wi
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix wrong reg type conversion in release_reference() Some helper functions will allocate memory. To avoid memory leaks, the verifier requires the eBPF program to release these memories by calling the corresponding helper functions. When a resource is released, all pointer registers corresponding to the resource should be invalidated. The verifier use release_references() to do this job, by apply __mark_reg_unknown() to each relevant register. It will give these registers the type of SCALAR_VALUE. A register that will contain a pointer value at runtime, but of type SCALAR_VALUE, which may allow the unprivileged user to get a kernel pointer by storing this register into a map. Using __mark_reg_not_init() while NOT allow
GHSA
GHSA-p59w-r597-mmwf: In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix wrong reg type conversion in release_reference()
Some helper functions
ghsa_unreviewed·2025-05-01
CVE-2022-49873 [MEDIUM] CWE-704 GHSA-p59w-r597-mmwf: In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix wrong reg type conversion in release_reference()
Some helper functions
In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix wrong reg type conversion in release_reference()
Some helper functions will allocate memory. To avoid memory leaks, the
verifier requires the eBPF program to release these memories by calling
the corresponding helper functions.
When a resource is released, all pointer registers corresponding to the
resource should be invalidated. The verifier use release_references() to
do this job, by apply __mark_reg_unknown() to each relevant register.
It will give these registers the type of SCALAR_VALUE. A register that
will contain a pointer value at runtime, but of type SCALAR_VALUE, which
may allow the unprivileged user to get a kernel pointer by storing this
register into a map.
Using __mark_reg_not_init() while NOT
No detection rules found.
No public exploits indexed.
2025-05-01
Published