CVE-2021-47199
published 2024-04-10CVE-2021-47199: In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: CT, Fix multiple allocations and memleak of mod acts CT clear action offload…
PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.20%
9.5th percentile
In the Linux kernel, the following vulnerability has been resolved:
net/mlx5e: CT, Fix multiple allocations and memleak of mod acts
CT clear action offload adds additional mod hdr actions to the
flow's original mod actions in order to clear the registers which
hold ct_state.
When such flow also includes encap action, a neigh update event
can cause the driver to unoffload the flow and then reoffload it.
Each time this happens, the ct clear handling adds that same set
of mod hdr actions to reset ct_state until the max of mod hdr
actions is reached.
Also the driver never releases the allocated mod hdr actions and
causing a memleak.
Fix above two issues by moving CT clear mod acts allocation
into the parsing actions phase and only use it when offloading the rule.
The release of mod acts will be done in the normal flow_put().
backtrace:
[] krealloc+0x83/0xd0
[] mlx5e_mod_hdr_alloc+0x147/0x300 [mlx5_core]
[] mlx5e_tc_match_to_reg_set_and_get_id+0xd7/0x240 [mlx5_core]
[] mlx5e_tc_match_to_reg_set+0xa/0x20 [mlx5_core]
[] mlx5_tc_ct_entry_set_registers.isra.0+0x36/0xc0 [mlx5_core]
[] mlx5_tc_ct_flow_offload+0x272/0x1f10 [mlx5_core]
[] mlx5e_tc_offload_fdb_rules.part.0+0x150/0x620 [mlx5_core]
[] mlx5e_tc_encap_flows_add+0x489/0x690 [mlx5_core]
[] mlx5e_rep_update_flows+0x6e4/0x9b0 [mlx5_core]
[] mlx5e_rep_neigh_update+0x39a/0x5d0 [mlx5_core]
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.15.5-1 (bookworm) | linux 5.15.5-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 1ef3018f5af3da6376fae546e4dfc3f05f063815 < 486e8de6e233ff2999493533c6259d1cb538653b | 486e8de6e233ff2999493533c6259d1cb538653b |
| linux | linux | >= 1ef3018f5af3da6376fae546e4dfc3f05f063815 < 806401c20a0f9c51b6c8fd7035671e6ca841f6c2 | 806401c20a0f9c51b6c8fd7035671e6ca841f6c2 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.15.5-1 | 5.15.5-1 |
| linux | linux_kernel | >= 0 < 5.15.5-1 | 5.15.5-1 |
| linux | linux_kernel | >= 0 < 5.15.5-1 | 5.15.5-1 |
| linux | linux_kernel | >= 5.7 < 5.15.5 | 5.15.5 |
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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OSV
CVE-2021-47199: In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: CT, Fix multiple allocations and memleak of mod acts CT clear action of
osv·2024-04-10·CVSS 5.5
CVE-2021-47199 [MEDIUM] CVE-2021-47199: In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: CT, Fix multiple allocations and memleak of mod acts CT clear action of
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: CT, Fix multiple allocations and memleak of mod acts CT clear action offload adds additional mod hdr actions to the flow's original mod actions in order to clear the registers which hold ct_state. When such flow also includes encap action, a neigh update event can cause the driver to unoffload the flow and then reoffload it. Each time this happens, the ct clear handling adds that same set of mod hdr actions to reset ct_state until the max of mod hdr actions is reached. Also the driver never releases the allocated mod hdr actions and causing a memleak. Fix above two issues by moving CT clear mod acts allocation into the parsing actions phase and only use it when offloading the rule. The release of mod acts will b
GHSA
GHSA-q54v-653w-2v9v: In the Linux kernel, the following vulnerability has been resolved:
net/mlx5e: CT, Fix multiple allocations and memleak of mod acts
CT clear action
ghsa_unreviewed·2024-04-10
CVE-2021-47199 [MEDIUM] CWE-401 GHSA-q54v-653w-2v9v: In the Linux kernel, the following vulnerability has been resolved:
net/mlx5e: CT, Fix multiple allocations and memleak of mod acts
CT clear action
In the Linux kernel, the following vulnerability has been resolved:
net/mlx5e: CT, Fix multiple allocations and memleak of mod acts
CT clear action offload adds additional mod hdr actions to the
flow's original mod actions in order to clear the registers which
hold ct_state.
When such flow also includes encap action, a neigh update event
can cause the driver to unoffload the flow and then reoffload it.
Each time this happens, the ct clear handling adds that same set
of mod hdr actions to reset ct_state until the max of mod hdr
actions is reached.
Also the driver never releases the allocated mod hdr actions and
causing a memleak.
Fix above two issues by moving CT clear mod acts allocation
into the parsing actions phase and only use it when offloading the rule.
The release of mod acts w
Red Hat
kernel: net/mlx5e: CT, Fix multiple allocations and memleak of mod acts
vendor_redhat·2024-04-10·CVSS 5.5
CVE-2021-47199 [MEDIUM] CWE-402 kernel: net/mlx5e: CT, Fix multiple allocations and memleak of mod acts
kernel: net/mlx5e: CT, Fix multiple allocations and memleak of mod acts
In the Linux kernel, the following vulnerability has been resolved:
net/mlx5e: CT, Fix multiple allocations and memleak of mod acts
CT clear action offload adds additional mod hdr actions to the
flow's original mod actions in order to clear the registers which
hold ct_state.
When such flow also includes encap action, a neigh update event
can cause the driver to unoffload the flow and then reoffload it.
Each time this happens, the ct clear handling adds that same set
of mod hdr actions to reset ct_state until the max of mod hdr
actions is reached.
Also the driver never releases the allocated mod hdr actions and
causing a memleak.
Fix above two issues by moving CT clear mod acts allocation
into the parsing actions phase
Debian
CVE-2021-47199: linux - In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: ...
vendor_debian·2021·CVSS 5.5
CVE-2021-47199 [MEDIUM] CVE-2021-47199: linux - In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: ...
In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: CT, Fix multiple allocations and memleak of mod acts CT clear action offload adds additional mod hdr actions to the flow's original mod actions in order to clear the registers which hold ct_state. When such flow also includes encap action, a neigh update event can cause the driver to unoffload the flow and then reoffload it. Each time this happens, the ct clear handling adds that same set of mod hdr actions to reset ct_state until the max of mod hdr actions is reached. Also the driver never releases the allocated mod hdr actions and causing a memleak. Fix above two issues by moving CT clear mod acts allocation into the parsing actions phase and only use it when offloading the rule. The release of mod acts will b
No detection rules found.
No public exploits indexed.
2024-04-10
Published