CVE-2022-50728
published 2025-12-24CVE-2022-50728: In the Linux kernel, the following vulnerability has been resolved: s390/lcs: Fix return type of lcs_start_xmit() With clang's kernel control flow integrity…
PriorityP422low5.5
EPSS
0.25%
16.1th percentile
In the Linux kernel, the following vulnerability has been resolved:
s390/lcs: Fix return type of lcs_start_xmit()
With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG),
indirect call targets are validated against the expected function
pointer prototype to make sure the call target is valid to help mitigate
ROP attacks. If they are not identical, there is a failure at run time,
which manifests as either a kernel panic or thread getting killed. A
proposed warning in clang aims to catch these at compile time, which
reveals:
drivers/s390/net/lcs.c:2090:21: error: incompatible function pointer types initializing 'netdev_tx_t (*)(struct sk_buff *, struct net_device *)' (aka 'enum netdev_tx (*)(struct sk_buff *, struct net_device *)') with an expression of type 'int (struct sk_buff *, struct net_device *)' [-Werror,-Wincompatible-function-pointer-types-strict]
.ndo_start_xmit = lcs_start_xmit,
^~~~~~~~~~~~~~
drivers/s390/net/lcs.c:2097:21: error: incompatible function pointer types initializing 'netdev_tx_t (*)(struct sk_buff *, struct net_device *)' (aka 'enum netdev_tx (*)(struct sk_buff *, struct net_device *)') with an expression of type 'int (struct sk_buff *, struct net_device *)' [-Werror,-Wincompatible-function-pointer-types-strict]
.ndo_start_xmit = lcs_start_xmit,
^~~~~~~~~~~~~~
->ndo_start_xmit() in 'struct net_device_ops' expects a return type of
'netdev_tx_t', not 'int'. Adjust the return type of lcs_start_xmit() to
match the prototype's to resolve the warning and potential CFI failure,
should s390 select ARCH_SUPPORTS_CFI_CLANG in the future.
Affected
23 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.4-1 (bookworm) | linux 6.1.4-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= dc1f8bf68b311b1537cb65893430b6796118498a < 7b4da3fcd513b8e67823eb80da37aad99b3339c1 | 7b4da3fcd513b8e67823eb80da37aad99b3339c1 |
| linux | linux | >= dc1f8bf68b311b1537cb65893430b6796118498a < d49cc2b705711fb8fb849e7c660929b2100360b7 | d49cc2b705711fb8fb849e7c660929b2100360b7 |
| linux | linux | >= dc1f8bf68b311b1537cb65893430b6796118498a < e684215d8a903752e2b0cc946517fb61e57a880a | e684215d8a903752e2b0cc946517fb61e57a880a |
| linux | linux | >= dc1f8bf68b311b1537cb65893430b6796118498a < 20022d551f2064a194d8e0acb6cd7a85094a17b2 | 20022d551f2064a194d8e0acb6cd7a85094a17b2 |
| linux | linux | >= dc1f8bf68b311b1537cb65893430b6796118498a < ebc3c77785dc8b5b626309c0032a38fbb139287a | ebc3c77785dc8b5b626309c0032a38fbb139287a |
| linux | linux | >= dc1f8bf68b311b1537cb65893430b6796118498a < 5ad774fb823c24bbeb21a15a67103ea7a6f5b928 | 5ad774fb823c24bbeb21a15a67103ea7a6f5b928 |
| linux | linux | >= dc1f8bf68b311b1537cb65893430b6796118498a < 69669820844f81a77b6db24b86581320ae4d17af | 69669820844f81a77b6db24b86581320ae4d17af |
| linux | linux | >= dc1f8bf68b311b1537cb65893430b6796118498a < cda74cdc280ba35c8993e7517bac5c257ff36f18 | cda74cdc280ba35c8993e7517bac5c257ff36f18 |
| linux | linux | >= dc1f8bf68b311b1537cb65893430b6796118498a < bb16db8393658e0978c3f0d30ae069e878264fa3 | bb16db8393658e0978c3f0d30ae069e878264fa3 |
| linux | linux_kernel | >= 0 < 5.10.178-1 | 5.10.178-1 |
| linux | linux_kernel | >= 0 < 6.1.4-1 | 6.1.4-1 |
| linux | linux_kernel | >= 0 < 6.1.4-1 | 6.1.4-1 |
| linux | linux_kernel | >= 0 < 6.1.4-1 | 6.1.4-1 |
| linux | linux_kernel | >= 2.6.32 < 4.9.337 | 4.9.337 |
| linux | linux_kernel | >= 4.10.0 < 4.14.303 | 4.14.303 |
| linux | linux_kernel | >= 4.15.0 < 4.19.270 | 4.19.270 |
| linux | linux_kernel | >= 4.20.0 < 5.4.229 | 5.4.229 |
| linux | linux_kernel | >= 5.11.0 < 5.15.86 | 5.15.86 |
| linux | linux_kernel | >= 5.16.0 < 6.0.16 | 6.0.16 |
| linux | linux_kernel | >= 5.5.0 < 5.10.163 | 5.10.163 |
| linux | linux_kernel | >= 6.1.0 < 6.1.2 | 6.1.2 |
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VulDB
Linux Kernel up to 6.1.1 s390 lcs_start_xmit control flow (Nessus ID 279880 / WID-SEC-2025-2929)
vuldb·2026-04-21
CVE-2022-50728 [CRITICAL] Linux Kernel up to 6.1.1 s390 lcs_start_xmit control flow (Nessus ID 279880 / WID-SEC-2025-2929)
A vulnerability was found in Linux Kernel up to 6.1.1. It has been classified as critical. The affected element is the function lcs_start_xmit of the component s390. The manipulation leads to incorrect control flow.
This vulnerability is uniquely identified as CVE-2022-50728. The attack can only be initiated within the local network. No exploit exists.
Upgrading the affected component is recommended.
OSV
s390/lcs: Fix return type of lcs_start_xmit()
osv·2025-12-24
CVE-2022-50728 s390/lcs: Fix return type of lcs_start_xmit()
s390/lcs: Fix return type of lcs_start_xmit()
In the Linux kernel, the following vulnerability has been resolved:
s390/lcs: Fix return type of lcs_start_xmit()
With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG),
indirect call targets are validated against the expected function
pointer prototype to make sure the call target is valid to help mitigate
ROP attacks. If they are not identical, there is a failure at run time,
which manifests as either a kernel panic or thread getting killed. A
proposed warning in clang aims to catch these at compile time, which
reveals:
drivers/s390/net/lcs.c:2090:21: error: incompatible function pointer types initializing 'netdev_tx_t (*)(struct sk_buff *, struct net_device *)' (aka 'enum netdev_tx (*)(struct sk_buff *, struct net_device *)'
OSV
CVE-2022-50728: In the Linux kernel, the following vulnerability has been resolved: s390/lcs: Fix return type of lcs_start_xmit() With clang's kernel control flow int
osv·2025-12-24
CVE-2022-50728 CVE-2022-50728: In the Linux kernel, the following vulnerability has been resolved: s390/lcs: Fix return type of lcs_start_xmit() With clang's kernel control flow int
In the Linux kernel, the following vulnerability has been resolved: s390/lcs: Fix return type of lcs_start_xmit() With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG), indirect call targets are validated against the expected function pointer prototype to make sure the call target is valid to help mitigate ROP attacks. If they are not identical, there is a failure at run time, which manifests as either a kernel panic or thread getting killed. A proposed warning in clang aims to catch these at compile time, which reveals: drivers/s390/net/lcs.c:2090:21: error: incompatible function pointer types initializing 'netdev_tx_t (*)(struct sk_buff *, struct net_device *)' (aka 'enum netdev_tx (*)(struct sk_buff *, struct net_device *)') with an expression of type 'int (struct sk_buff
GHSA
GHSA-fq4q-h53f-3wjv: In the Linux kernel, the following vulnerability has been resolved:
s390/lcs: Fix return type of lcs_start_xmit()
With clang's kernel control flow i
ghsa_unreviewed·2025-12-24
CVE-2022-50728 GHSA-fq4q-h53f-3wjv: In the Linux kernel, the following vulnerability has been resolved:
s390/lcs: Fix return type of lcs_start_xmit()
With clang's kernel control flow i
In the Linux kernel, the following vulnerability has been resolved:
s390/lcs: Fix return type of lcs_start_xmit()
With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG),
indirect call targets are validated against the expected function
pointer prototype to make sure the call target is valid to help mitigate
ROP attacks. If they are not identical, there is a failure at run time,
which manifests as either a kernel panic or thread getting killed. A
proposed warning in clang aims to catch these at compile time, which
reveals:
drivers/s390/net/lcs.c:2090:21: error: incompatible function pointer types initializing 'netdev_tx_t (*)(struct sk_buff *, struct net_device *)' (aka 'enum netdev_tx (*)(struct sk_buff *, struct net_device *)') with an expression of type 'int (struct sk_bu
Red Hat
kernel: Linux kernel: Denial of Service in s390/lcs network driver due to incompatible function pointer type
vendor_redhat·2025-12-24·CVSS 5.5
CVE-2022-50728 [LOW] CWE-628 kernel: Linux kernel: Denial of Service in s390/lcs network driver due to incompatible function pointer type
kernel: Linux kernel: Denial of Service in s390/lcs network driver due to incompatible function pointer type
In the Linux kernel, the following vulnerability has been resolved:
s390/lcs: Fix return type of lcs_start_xmit()
With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG),
indirect call targets are validated against the expected function
pointer prototype to make sure the call target is valid to help mitigate
ROP attacks. If they are not identical, there is a failure at run time,
which manifests as either a kernel panic or thread getting killed. A
proposed warning in clang aims to catch these at compile time, which
reveals:
drivers/s390/net/lcs.c:2090:21: error: incompatible function pointer types initializing 'netdev_tx_t (*)(struct sk_buff *, struct net_device *)' (aka
Debian
CVE-2022-50728: linux - In the Linux kernel, the following vulnerability has been resolved: s390/lcs: F...
vendor_debian·2022
CVE-2022-50728 CVE-2022-50728: linux - In the Linux kernel, the following vulnerability has been resolved: s390/lcs: F...
In the Linux kernel, the following vulnerability has been resolved: s390/lcs: Fix return type of lcs_start_xmit() With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG), indirect call targets are validated against the expected function pointer prototype to make sure the call target is valid to help mitigate ROP attacks. If they are not identical, there is a failure at run time, which manifests as either a kernel panic or thread getting killed. A proposed warning in clang aims to catch these at compile time, which reveals: drivers/s390/net/lcs.c:2090:21: error: incompatible function pointer types initializing 'netdev_tx_t (*)(struct sk_buff *, struct net_device *)' (aka 'enum netdev_tx (*)(struct sk_buff *, struct net_device *)') with an expression of type 'int (struct sk_buff
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2022-50728 kernel: Linux kernel: Denial of Service in s390/lcs network driver due to incompatible function pointer type
bugzilla·2025-12-24
CVE-2022-50728 [LOW] CVE-2022-50728 kernel: Linux kernel: Denial of Service in s390/lcs network driver due to incompatible function pointer type
CVE-2022-50728 kernel: Linux kernel: Denial of Service in s390/lcs network driver due to incompatible function pointer type
In the Linux kernel, the following vulnerability has been resolved:
s390/lcs: Fix return type of lcs_start_xmit()
With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG),
indirect call targets are validated against the expected function
pointer prototype to make sure the call target is valid to help mitigate
ROP attacks. If they are not identical, there is a failure at run time,
which manifests as either a kernel panic or thread getting killed. A
proposed warning in clang aims to catch these at compile time, which
reveals:
drivers/s390/net/lcs.c:2090:21: error: incompatible function pointer types initializing 'netdev_tx_t (*)(struct sk_buff *, struct n
Wiz
CVE-2022-50728 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz
CVE-2022-50728 CVE-2022-50728 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2022-50728 :
Linux Kernel vulnerability analysis and mitigation
In the Linux kernel, the following vulnerability has been resolved:
s390/lcs: Fix return type of lcs_start_xmit()
With clang's kernel control flow integrity (kCFI, CONFIG_CFI_CLANG),
indirect call targets are validated against the expected function
pointer prototype to make sure the call target is valid to help mitigate
ROP attacks. If they are not identical, there is a failure at run time,
which manifests as either a kernel panic or thread getting killed. A
proposed warning in clang aims to catch these at compile time, which
reveals:
drivers/s390/net/lcs.c:2090:21: error: incompatible function pointer types initializing 'netdev_tx_t (*)(struct sk_buff *, struct net_device )' (aka 'enum netdev_tx ( )(struct sk_buff
https://git.kernel.org/stable/c/20022d551f2064a194d8e0acb6cd7a85094a17b2https://git.kernel.org/stable/c/5ad774fb823c24bbeb21a15a67103ea7a6f5b928https://git.kernel.org/stable/c/69669820844f81a77b6db24b86581320ae4d17afhttps://git.kernel.org/stable/c/7b4da3fcd513b8e67823eb80da37aad99b3339c1https://git.kernel.org/stable/c/bb16db8393658e0978c3f0d30ae069e878264fa3https://git.kernel.org/stable/c/cda74cdc280ba35c8993e7517bac5c257ff36f18https://git.kernel.org/stable/c/d49cc2b705711fb8fb849e7c660929b2100360b7https://git.kernel.org/stable/c/e684215d8a903752e2b0cc946517fb61e57a880ahttps://git.kernel.org/stable/c/ebc3c77785dc8b5b626309c0032a38fbb139287a
2025-12-24
Published