The branch releng/13.1 has been updated by emaste: URL: https://cgit.FreeBSD.org/src/commit/?id=5a28d8befda032e52bf8ad160992e3499f5bbdff
commit 5a28d8befda032e52bf8ad160992e3499f5bbdff Author: Mark Johnston <[email protected]> AuthorDate: 2022-04-05 22:51:19 +0000 Commit: Ed Maste <[email protected]> CommitDate: 2022-04-06 01:56:21 +0000 bhyve: validate e82545 checksum offset field Reported by: Mehdi Talbi, Synacktiv (cherry picked from commit b0aa20bec5db244980a0248e24dd6b8e1e68c4d0) (cherry picked from commit 53f72209479885dfa6a7e6ed68cbc82c68464f4b) Approved by: so, re (implicit) --- usr.sbin/bhyve/pci_e82545.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/usr.sbin/bhyve/pci_e82545.c b/usr.sbin/bhyve/pci_e82545.c index d0b4fb9e466f..76f2839fba31 100644 --- a/usr.sbin/bhyve/pci_e82545.c +++ b/usr.sbin/bhyve/pci_e82545.c @@ -1278,9 +1278,7 @@ e82545_transmit(struct e82545_softc *sc, uint16_t head, uint16_t tail, goto done; } if (sc->esc_txctx.cmd_and_length & E1000_TXD_CMD_TCP) { - if (hdrlen < ckinfo[1].ck_start + 14 || - (ckinfo[1].ck_valid && - hdrlen < ckinfo[1].ck_off + 2)) { + if (hdrlen < ckinfo[1].ck_start + 14) { WPRINTF("TSO hdrlen too small for TCP fields " "(%d) -- dropped", hdrlen); goto done; @@ -1292,6 +1290,11 @@ e82545_transmit(struct e82545_softc *sc, uint16_t head, uint16_t tail, goto done; } } + if (ckinfo[1].ck_valid && hdrlen < ckinfo[1].ck_off + 2) { + WPRINTF("TSO hdrlen too small for TCP/UDP fields " + "(%d) -- dropped", hdrlen); + goto done; + } } /* Allocate, fill and prepend writable header vector. */
